Arsenal academy chief Per Mertesacker says new sporting director Edu has been set ambitious targets.

Mertesacker says that the brief for Edu, who played for the Gunners from 2001 to 2005, is very simple: Make Arsenal great again.

He said: “Edu will make changes.

"He has the power to change what he wants around the first team. He's a very positive guy. First of all, he trusts me! We work very closely ­together, I think we can make a shift to being world-class again.

“That's the responsibility we have and the legacy that Arsene has left. By being so successful he set ­expectations."