Schalke defender Christoph Metzelder is wary of the threat posed by Manchester United striker Wayne Rooney ahead of their Champions League semi-final clash on Tuesday.
The Bundesliga side are underdogs heading into the game, but they eliminated last year's winners Inter in the last round - a building block which could be fragmented by United, and Rooney.
"In the return leg against Chelsea, Rooney played as a central striker, a playmaker and sometimes even as a holding midfielder; he dropped deep to lose his markers, he was very agile and we have to defend properly against him when he is between the lines," Metzelder told the press as he picked out the England international as tomorrow's main threat in Gelsenkirchen.
Despite his confidence, the 30-year-old German is nervous ahead of the big occasion, but said some of the experienced players in his squad could make up for the shortfall.
"Being nervous is normal," he added
"I have been a footballer for quite a few years now, but you still get that feeling. It is a very special day for the club and us as a team. There are so many journalists here from all over the world; the entire football world is looking at Gelsenkirchen.
"With the exception of Raul, most of our players are not used to playing in several competitions at once.
"After the return leg against Inter I said that I couldn't imagine United letting us put five goals past them. That will be the most significant difference. They are a team with a good basic discipline who do not give anything away. If we can do that as well, these will be two tight games."