Ferguson’s challenge to Gunners

ALEX FERGUSON last night challenged Arsenal to prove they are a truly great side by winning back back-to-back Premiership titles.

United's boss has conceded the championship to the Gunners this season, but made an early start to next season's mind games by insisting Arsenal must retain the trophy to be mentioned in the same breath as the Old Trafford club.

Arsenal failed to defend the domestic crown following their 1998 and 2000 title wins whereas United have won back-to-back championships twice as well as three in a row between 1999 and 2001.