Switzerland boss Ottmar Hitzfeld is backing Philippe Senderos for success with Everton.
Senderos has joined Everton on-loan to the end of the season from Arsenal.
"First of all his personality," Hitzfeld said when evertonfc.com asked him about the defender's strengths. "He is a true leader of any team. He is the one who opens his mouth not only during games, but also in training sessions.
"He simply is unable to accept defeats, he cannot lose. He's very strong in the air, and he knows how to read the game."
He added: "I learned that David Moyes had even travelled to London to talk to Philippe to prove that he was going to count on him.
"Philippe could have gone to Glasgow as well, it might even have been easier for him to install himself as a defender, but the fact that he has chosen a team which has got some very good defenders already shows me his sheer will to make up for anything he has been missing.
"He wants be in good shape when it comes to the FIFA World Cup 2010 in June."