Perez, who recently handed in a formal transfer request, found regular game time hard to come by last season despite impressing in the handful of opportunities he was given, scoring seven goals in 21 appearances in all competitions for Wenger's men.
The 22-year-old has looked sharp in the friendlies and there are suggestions he could be given the nod to face Tottenham Hotspur in the season-opener at St James' Park this Sunday.
Mitrovic scored three goals for the Mags in pre-season.
He said at the Premier League's launch day: "I was talking with Arsene yesterday because we had the manager's meeting and I said, 'Listen, we have to talk.' He said, 'Listen, you have some money?' I like the player but it's too soon to talk about that". This one is hard and tough.
"I am trying to do my best right now".
Colback, signed from Sunderland in 2014, has two years left on his United deal. And the Serbia global - who found opportunities hard to come by in the Championship last season because of the form of Gayle - hopes to repay fans for their backing.
"If we are still in the race it's because we believe there's a possibility and we will continue to fight because the truth is the player is looking forward to joining us".
He again made his thoughts known this morning, by saying: "I am not happy".
"If Fenerbahce striker a deal with Arsenal, Lucas would be happy to wear the shirt", Lovelle said.
Mitrovic last week insisted he was "focused" on his Newcastle career despite continued speculation over his future.
"The story is, as I said before, we missed our targets".
"I am fully committed to the fans, my club, my players, and we will try to improve the squad if we can now with the players that will be available".