Alexis has spent the second-half of this season on-loan with Inter.
"Alexis has been unlucky this season because of that injury but the quality that he has is not up for discussion," Eto'o told CDF Noticias.
“He is a player who can make a difference at all times. He is a different kind of forward, of movement and is lethal in one on one situations.
“It is normal that it will take time for him to get back to his best because he arrived at Inter following a period at United where he did not play much."
“He has different skills, someone like him is always comfortable at clubs like Inter."