In one sense, United did Arsenal a favour by winning at Ipswich on Saturday. Their controversial 1-0 victory at Portman Road may have kept the title race alive but also it simplified the relegation issue and lifted the threat of relegation from Bolton.
Arsenal, who drew 1-1 with Bolton at Highbury in September, haven't lost a game in domestic football since Newcastle beat them 3-1 at Highbury just before Christmas.
"I know the pressure is off Bolton but they'll be 100 per cent committed," said Wenger. "This is a massive game for us."