M1 lied to fighter Gerard Mousasi about UFC, so that he would sign with Strikeforce.
From Joe Silva:
Maybe this is what happen to Fedor too. M1 lied about the amount of the offer. I don't know if it is true, but I lost all respect for M1 if it is.
Mousasi called him Saturday because he suspected he had been lied to by his manager, Appy Echteld, regarding an offer of $40,000/$40,000 from the UFC and then encouraged to accept an offer from Strikeforce. According to what Mousasi shared, that amount was less than half of the purse agreement he had with Affliction but he trusted his manager and signed with Strikeforce. The UFC would have honored the Affliction deal of $125,000 purse plus win bonus had Mousasi signed with them.