Arsenal captain Cesc Fabregas has urged manager Arsene Wenger to go for Barcelona midfielder Yaya Toure.
He said: "We are used to having someone like Patrick Vieira, Gilberto Silva or Flamini in the middle of the pitch.
"It is true that without someone like that we have been slightly unbalanced and weakened in such an important position. It is a position that is undervalued but it is so important, especially for teams like ours that attack so much. When you have the ball it is so important to have a guarantee that there is someone behind you covering."