Real Madrid midfielder Luka Modric could be a doubt for the clash with Paris Saint-Germain on March 6 due to a hamstring injury, Zinedine Zidane has confirmed.
The Croatia international missed training on Tuesday and is set to sit out Wednesday's LaLiga meeting with Leganes at Butarque.
Head coach Zidane hopes the injury is only minor but is uncertain how long Modric will be out of action.
"Modric has a hamstring issue," he told a news conference. "I always have faith in the staff here, the physios and doctors, so he will be back with us quickly. I don't think it is serious."
The injury is the latest to hit the Madrid squad since their 3-1 win over PSG in the first leg of the Champions League last 16 last week.
Toni Kroos has picked up a knee problem and Marcelo limped out of Sunday's 5-3 win over Real Betis with another suspected hamstring issue.
Zidane remains hopeful, though, that all three could return for the meeting at Parc des Princes.
"I am always positive," he said. "I do not like to see today that we have three or four players out injured. I hope they are not out too long, but we will see. I hope it is short.
"It can be that, when there are certain [injury] problems, it's because of an enormous effort. But, at the same time, in order to cope with matches like the one against PSG, we have to repeat those efforts.
"We have to maintain the pressure in every game and to keep doing it for 90 minutes. And doing it every three days is positive.
"When you're winning playing every three days, you're more optimistic. That's what we need now."
|Del Potro relishing Federer showdown|
|Australia to host two games against Team USA in 2019|
|Grizzlies snap 19-game losing streak, LeBron´s triple-double lifts Cavs|
|McIlroy suggests limiting alcohol sales after Bay Hill abuse|
|Marotta dismisses Allegri-PSG links as Juve focus on Can|
|MLS Review: Champions Toronto still winless, Atlanta crush Whitecaps|
|Lukaku: A lot of players will join Manchester United next season|
|I feel like I just woke up – Indian Wells finalist Federer explains slow start|
|High-flying Reds win third straight in Buenos Aires|
|Salah and Liverpool don´t fear Man City: We´ve beaten them!|
|What can I lose? - Mourinho defends criticism of Man Utd players|
|Mourinho accuses Manchester United of being scared to play|
|Mourinho delivers stinging Shaw criticism after FA Cup win|
|Haskell: England not good enough during Six Nations|
|Allegri waits on Chiellini update after Juve´s SPAL stalemate|
|Stenson leads by one with DeChambeau and McIlroy lurking|
|Racing put pressure on leaders Montpellier as Toulon are toppled|
|Klopp eases concerns over Can´s back complaint|
|Six Nations defeats make no difference to England mindset – Hartley|
|Matic was an island of personality - Mourinho questions United mentality|
|Del Potro demolishes Raonic to set up Federer final|
|He´s getting quicker on the Zimmer frame – Schmidt jokes about Best future|
|SPAL 0 Juventus 0: Scudetto charge halted by Serie A strugglers|
|Manchester United 2 Brighton and Hove Albion 0: Lukaku & Matic book semi-final spot|
|Fresh rib fracture for Cavendish but ´no serious injury´ after crash|
|Unbeaten Federer fights back to reach Indian Wells final|
|Klopp: Salah could be among world´s best, but don´t compare him to Messi|
|Woods hopes to still be within reach at Arnold Palmer Invitational|
|Championship Review: Wolves on the charge as Monk lifts Birmingham´s spirits|
|Twickenham boos will ´put me to sleep at night´, Jones claims|
|Salah threatening Rush´s record for goals in single Liverpool season|
|Hodgson hopes Zaha avoided injury|
|Snow causes Wakefield-Widnes abandonment|
|Liverpool 5 Watford 0: Inspirational Salah nets four as Reds bounce back|
|Lambert rues Everton´s ´offside´ opener in costly Stoke City defeat|
|Scotland´s late rally leaves Townsend feeling positive for the future|
|Wales hold off France to claim second behind Ireland|
|Man Utd bench Pogba & Sanchez for FA Cup quarter-final|
|Pardew: Evans loss key to Bournemouth defeat|
|Zarco breaks track record to claim Qatar pole after Rossi crashes in practice|
|Ireland had to make every moment count against England – Best|
|Salah breaks Torres´ impressive Liverpool record|
|We are not heroes one day and villains the next – Mourinho continues defence of Sevilla exit|
|Lions bounce back against Sunwolves, Stormers end miserable streak|
|Jones: England losing streak only natural|
|They have many players who´d get in my team – The Sevilla stars Mourinho should buy|
|Mario Gomez will not beg for World Cup place|
|England´s form continues to run cold in Twickenham snow|
|Nibali holds on in Milan-San Remo as Cavendish crashes again|
|Bournemouth 2 West Brom 1: Stanislas piles misery on Pardew|
|Buffon to play on for Italy as Di Biagio calls up uncapped duo|
|Huddersfield Town 0 Crystal Palace 2: Tomkins and Milivojevic secure priceless win|
|Stockdale makes history as ruthless Ireland win Grand Slam|
|Stoke City 1 Everton 2: Tosun at the double after Adam´s early dismissal|
|Simeone insists Atletico can survive injury crisis|
|Ireland´s Stockdale breaks Six Nations single campaign try record against England|
|Leipzig out to halt Bayern celebrations at Red Bull Arena|
|NFL Draft 2018: Jets acquire number three overall pick from Colts|
|Board accepts responsibility for West Ham woes, Brady claims|
|In-form Eriksen hopes he hasn´t hit Tottenham ceiling|
|Roma boss Di Francesco happy with Messi, Barca challenge|
|Bangladesh warned over ´unacceptable´ Colombo behaviour|
|The directors know where to find me - Gattuso awaits Milan talks|
|Laidlaw breaks Italian hearts in Rome|
|UMBC´s March Madness win earns everyone in USA free pizza|
|Zidane focused on Real Madrid players, not Neymar|
|Mourinho´s United rant recalls unhappy Madrid demise|
|Swansea City 0 Tottenham 3: Eriksen leads Kane-less Spurs into FA Cup semis|
|Valverde not worried about Barcelona legacy|
|Markelle Fultz´s return remains a mystery to Brett Brown|