The Gunners boss says Mohamed Elneny has proved that he is ready for a regular starting spot in midfield.
The former Liverpool boss replaced Steve McClaren following his sacking on Friday.
Former Liverpool defender was happy to see his old side beat Manchester United.
Tottenham face Aston Villa and Leicester City take on Newcastle United.
At 20 in the countdown is a defender who remained a stalwart of the side for over a decade, making over 500 appearances in the process.
The former Chelsea star was a fan of the Spaniard's spell at Stamford Bridge.
Andy Halliday says he wants to reach 10 goals before the end of campaign and also wants to start netting more at Ibrox.
Arsenal are currently third in the Premier League table.
Newcastle United won't be the first club Rafa Benitez has tried to keep up.
Merson believes West Ham will not lose at Manchester United.