Mikel Arteta is hoping to guide Arsenal to their first Premier League title for 22 years

Arsenal boss Mikel Arteta is known for his innovative - often unorthodox - methods to motivate his players. This week he lit a fire at their London Colney training ground.

Why? To "prepare" for a crucial week, he said.

On Wednesday, they hosted Sporting in the Champions League and secured a place in the semi-finals. Next up is a visit to Manchester City in the Premier League on Sunday - their closest challengers in the title race.

"Every game we use different themes to try to prepare the game in the best possible way and that depends on what we do," said Arteta.