Robin van Persie retains the belief that Arsenal can still win the Premier League and hopes the Champions League will affect Manchester United.
Arsenal's title destiny is now out of their own hands following the 0-0 home draw with Blackburn Rovers on Saturday which left Arsene Wenger's side seven points adrift of United.
The Gunners do have a game in hand, and still have to welcome United to Emirates Stadium in May, to leave van Persie clinging to hope.
United also meet domestic rivals Chelsea in the Champions League quarter-finals and van Persie is keen for Arsenal to take advantage of any tiredness in the Red Devils camp.
"The way I look at it is that United have two extra big games before they have to play us," said van Persie.
"Hopefully they will have to dig deep into their reserves and come here tired. That's how I am looking at it because I want us to have the biggest chance against them.
"We start working hard on Monday again and everyone will be positive.
"We cannot be different. We do believe.
"We still play them and we have a chance to get three points there.
"It's up to us. Everyone stays positive and speaks to each other and says 'Come on, we've eight games to play for, give it your all'. We will do that."
