I have heard a couple of theiories mate, one is that Wilkins and Carlo have different opinions on how the game is ment to be played for example, when Ray was playing he was nicknamed "the crab" because he used to pass sideways and Carlo likes to pass forward take Obi Mikel this season for example now passing more forwards. Another is obviously trying to trim the wage bill some more which i personly don't believe because he proberly earns in a year what Lampard earns in a month. And another is that Wilkins and Abramovic fell out when we got knocked out the Champions League last season to Inter.