Gregg Wallace pictured on the set of MasterChef before his departure from the franchiseHigher-ups at the BBC were not “confident” that the former MasterChef host Gregg Wallace could “change what seems to be learned behaviour”, resulting in his exit from the broadcaster, it has been reported.Earlier this week, it was revealed that Gregg had been dropped as the host of MasterChef after 20 years at the helm, following an external investigation into complaints made to the BBC about his past conduct.