Manchester United midfielder Michael Carrick believes Arsenal will be desperate to prove on Sunday they are not a spent force.
Arsene Wenger's side tumbled out of the Champions League this week after losing 5-3 on aggregate to Liverpool and they arrive at Old Trafford needing a win to keep alive their faint title hopes.
United are six points clear of their rivals at the top of the table but Carrick is expecting a stiff test as they go for glory on two fronts.
He said: 'I am sure the Liverpool disappointment will be out of Arsenal's system when the match starts.
'It is a different game completely for them now and it is a big one. I don't know if it is make or break for them. Every game at this time of the season is huge.
'They will be right up for it and we face a real challenge.
'There is a lot at stake for both of us. We are aware that it will still be as tough as it would ever have been against them.
'But this is what you want to be involved in and the game on Sunday is massive.'
Carrick added: 'I am enjoying my football here and who wouldn't.
'We are involved in two competitions and in with a fighting chance in both of them.
'We have given ourselves a great chance in the league and done what we wanted to do in Europe.'
Cristiano Ronaldo and Wayne Rooney are both almost certain to be restored to the starting line-up after being rested in midweek.
United, however, still excelled to reach the semi-finals of the Champions League by beating Roma 3-0 on aggregate to set up a mouth-watering clash against Barcelona.
Ronaldo is delighted to have taken his game to a higher level this season.
'I am happy with my improvement,' said the 37-goal Portugal winger. 'I am sure I am a better player now than I was one year ago.
'I hope that trend continues. I definitely have more chances now and that is because my team-mates help me.
'This squad is the best I have been involved in since joining United. It is more consistent and more mature than any other side.'