I think Levy told him that 2017 Dele is back and that Sissoko isn't as shit as he looks. No wonder Mourinho feels betrayed.Fuck him and unless he wants to be specific and reveal why he was misled he should keep his trap shut.
Why didn't he quit when he realised he had been misled? Oh wait, the 15M a year he rinsed out of us might have been a factor. Gee, i wish my employer could mislead me and give me 15M a year to make up for it.