Arsenal defender Per Mertesacker says his post-match celebration 'bump' with Theo Walcott is evidence of the strong team spirit within the Gunners' camp at the moment.

The German and Walcott mark important Arsenal victories by leaping in the air and bumping their backs together, as seen following their impressive 3-0 win over Manchester United recently.

"I have no idea how that came about," Mertesacker told Arsenal Player when asked about the unique celebration with Walcott.

"It is just a small idea and we have just put it into practice, like a good habit.

"It reminds us always that [games are] hard work, but we enjoy ourselves, we enjoy playing together and trust each other.

"Small details makes this squad a special one. We are looking forward to having some good celebrations after the game."