Arsene Wenger’s Five Biggest Blunders As Arsenal Manager

2. Allowing key contract to run down

Wenger is a stubborn fellow, and has often allowed some of the club’s most important players wind their deals down before shuffling them out the door. Over the years he has lost the likes of Robert Pires, Edu and Mathieu Flamini for nothing (though Flamini later returned) and he has subsequently struggled to replace them.