Arsenal will face with Willian on Sunday - who has rediscovered his form for Fulham.
However, the winger has looked back on his stint with Arsenal - insisting he wish he never left Chelsea.
He said: "Yeah I wish I'd never left. Of course it's easy now to say something but when you stop to think about all the situations I say to myself 'I wish I never left'.
"But it's life, I'm happy now at Fulham and I'm enjoying myself there.
"They (Arsenal) are flying now. I think it was in the middle when things were changing a lot. I was excited when I signed with them, I was training hard but it just didn't work and that's it."