Ronald Koeman cannot rely on Sergiño Dest in the coming FC Barcelona matches.

The right back has sustained a muscle injury.

"He will not participate tomorrow and probably not next weekend," said Koeman on Wednesday at his press conference, in which he looked ahead to the cup match against UE Cornellà.

On Sunday, Barcelona will visit Elche in competition.

Twenty-year-old Dest was sold to Barcelona by Ajax in October for 21 million euros and is a basic player under Koeman.

The American international, born in Almere, has played 24 games so far (one goal, one assist) in the shirt of the Spanish top club.

Koeman can also have star player Lionel Messi in the cup match against Cornellà, who has been suspended for two games in La Liga after he was red against Athletic Club in the Super Cup on Sunday.

"He just trained with a lot of enthusiasm today and I have seen nothing else in him," said the former national coach of Orange.

"Everyone was disappointed with the result in the Super Cup, but we are on the right track."

The away game against Cornellà, which plays at the second level of Spain, starts on Thursday at 9 p.m.

If Barcelona wins, the club will be in the eighth finals of the Copa del Rey.

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