UEFA have announced that Shakhtar Donetsk were free to pick midfielder Fred in last week's Champions League fixture with Fenerbahce.
The decision comes after the midfielder failed a doping test, testing positive for the banned diuretic hydrochlorothiazide during this summer's Copa America.
Turkish side Fenerbahce suggested that Fred should not have featured in the 0-0 draw last Tuesday, but UEFA have cleared the Ukrainian club of any wrongdoing.
UEFA had previously advised Shakhtar not to pick the 22-year-old, but South American confederation CONMEBOL have not enforced a ban on the player.
Fred could feature in the second leg of the fixture on August 5.
