EMMANUEL PETIT has warned Unai Emery that constantly rotating his starting line-up could be fatal.

The Gunners have picked up just 11 points from six games ahead of Monday's clash against Manchester United.

Emery nearly has his entire first-team squad available for the highly-anticipated showdown at Old Trafford.

Hector Bellerin, Rob Holding and Kieran Tierney made their long-awaited return from injury for the 5-0 win over Nottingham Forest.

But Petit has suggested that Emery's tendency to tinker with his starting XI is making life hard for the Arsenal stars.

Writing in his Paddy Power column, the Gunners legend said: "What Unai Emery wants to create is a team.  A collective unit.

"Not just the first 11 but the whole group. This is why he's constantly rotating his side and including young players.

"I like this idea, but it's difficult for players to operate in a system like this.

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