Well ...not so bad at least he can be understood....But I liked that part of the interview because his Spanish sounded very nice there like a native speaker :) He has some problems with tenses ,I am sure that he knows how to use the Present Tense but he has problems with the future and past. I totally understand Mesut because Spanish and his verb endings are a real pain in the back . I don't know if the same happens to him in German but Languages are not for our lovely boy .However it is always a pleasure to listen to his Spanish accent...because I love it..he sounds like a little boy shy and adorable.