"It kills me to say this as an Arsenal fan, but my old club are not an attractive destination any more for the top, top players", he wrote in his column for The Sun.
For the seventh consecutive season, the Gunners were knocked out of the Champions League at the last-16 stage, as they were beaten 5-1 home and away by Carlo Ancelotti's side.
"We were positively prepared for the game".
Like Alexis Sanchez, the midfielder's contract expires at the end of next season, and history suggests he will either sign a new deal or be shown the exit before the summer transfer window closes in September.
Having now excelled in the Premier League over a two-year period, Gueye is being touted for a move to Arsenal, labelled as the man Arsene Wenger needs to reinvigorate a feeble midfield unit.
If you believe numerous British tabloids, there is a very good chance Mesut Ozil's time at Arsenal could come to an end this summer. We wanted to force him to play the ball to Javi Martinez, who's also a fine central defender but who isn't great at opening up the game. "The Spanish players love to play for their country and I think he will go as he loves to play for Spain". I could look for excuses. We have the worst form of the top seven of the division, with our recent win against West Ham posing as our only three point gain since February.
"We just need to do our job on the pitch".
When asked whether his players would give a positive response to the 3-0 defeat against Crystal Palace last time out, Wenger said: "You can never guarantee that". Their form is woeful even in comparison to ours, and our players are more than capable of picking themselves up and getting their heads on. "What you want - the real response - is to play with total commitment and with total belief in what we do". Because this fiasco also represents a great opportunity!
Arsenal travel to Middlesbrough, who are second from bottom, on Monday and will be hoping to get back into the top six by improving their record of one win in their last five league visits to the Riverside Stadium.