But he is bewildered as to why his star has faded so dramatically having deputised as skipper last term.
Gilberto, 32, admitted: "To this day I'm waiting for an explanation as to this change. The truth is I found out about it through the newspapers. I thought I had a good season last year and I saw no reason for what has happened. If I continue not to play, then leaving Arsenal is inevitable.
"I could not cope with another season like this one when Wenger has made me feel totally useless. A player must be able to smile. A sad Brazilian is no good, especially on a football pitch. Right now I really am struggling to battle on."