Real Madrid goalkeeper Iker Casillas faces a struggle to return to the starting line-up after recovering from injury, with manager Jose Mourinho acknowledging the form of Diego Lopez has given him a selection headache.
Casillas, 31, suffered a fracture in his hand during a Copa del Rey game for Real in January, prompting Los Blancos to fast track the signing of Lopez.
But the former Sevilla keeper's success as Casillas's replacement has increased speculation that the Real captain could be released in the summer and Mourinho confirmed it will be difficult for Lopez to be ousted from his position.
"We must be honest. The way Diego is playing, it will be very hard to get him out of the net," Mourinho said. "I cannot say for certain that he will be there till the end of the season, but he is playing very well. For now, it will be difficult for Casillas to be on the bench against Galatasaray, but he will surely be there for Levante."
Cristiano Ronaldo scored his 18th goal of the season to salvage a point for Real in their 1-1 draw with Real Zaragoza, highlighting Real's woes in attack this season and their reliance on the Portuguese winger.
"It is true that all our players except Ronaldo have scored less goals this season, and therefore the team suffers," Mourinho added. "But I believe they will come, if not this season, then the next. It is not a matter of winning the league now, but to secure second place.
"Our goals remain the same; to progress to the Copa del Rey final and beyond the quarter-finals of the Champions League."