The Guardian have a few suggestions:
Queens Park Rangers
In fairness, they were so lavishly bad that they became quite entertaining. Who could fail to be amused by their relentlessly inventive self-destruction, from misguided signings and tactics to slapstick own goals and majestically needless red cards? The owners goofed, both managers goofed and most of the players goofed. Impressive uniformity for a club riven by rifts.
Cheik Tioté
There were many reasons for Newcastle's stuttering campaign, some of them excusable. But while injuries and fixture congestion took a toll, some players just plain flunked their season. Cheik Tioté's regression from one of the signings of last season to nigh-on a liability this term was strange. Whereas last season he helped Newcastle establish a sturdy platform in midfield, this season his positive influence declined alarmingly and he was noticeable only for the consistency with which he mistimed tackles.
Tony Pulis
This season Stoke were supposed to make a great leap forward. Or was that last season? Pulis has been promising for a while that he would add a new dimension to his team's play, adding a little more unpredictability to their admirable ruggedness. But you get the feeling that he never really meant it or just couldn't bring himself to loosen up enough to create or attack, especially away, where Stoke were routinely contemptibly negative. To have a greater net spend on transfers than anyone other than Chelsea and Manchester City over the past five years and end up with a right flank manned by Andy Wilkinson and Ryan Shotton is to confess to an extraordinarily limited vision.
Roberto Mancini
There are professors who got PhDs from a slot machine in Butlins who could mount better defences of their title than Manchester City managed this season. So many non-performances, so many ill-conceived tactics and substitutions. And, while we're at it, so little clue in Europe.
Adam Johnson
Freed from the clutches of the unappreciative Mancini, the winger was supposed to fly to new heights at Sunderland. But he just didn't. He seemed inhibited by the responsibility thrust upon him following his £10m transfer and rather than bring sparkle to the Stadium of Light, he helped spread the gloom that engulfed it for most of the campaign. He may have been even worse than we think, but we just didn't realise it because Sunderland were rarely worth paying attention to.