Arsenal boss Arsene Wenger concedes Marouane Chamakh's partnership with fit-again Robin van Persie is a work in progress.
The pair failed to catch fire in last night's victory over Partizan Belgrade.
Wenger admitted: "I was not completely happy with our offensive game tonight. But I will have to watch that again. Maybe it was down to the quality of Partizan's defending because I felt they defended in a very intelligent way and very well. I will have to analyse that a bit better."
