Vinicius disappears mid-game LOL

same happened to me. I play with real madrid in seasons game. Vinicious appears on the kick off, then it starts to run toward the sideline and then is just dissapears however it is still showing as in game. If i try to do a subsitution, my new player does not appear either. I-ve lost like 3 games in a row by being 10v11 and even the commentator says in-game that my player was send-off.