I think it was because Sargent said he was homesick and the member of staff said "if you were that bothered about it you wouldn't have signed a contract with us in the first place".
Well last time they hired him, he (and his son) inadvertently set off a chain of events that led to them winning the Premier League.
This time they'll probably only win the EFL Trophy.
Rumour that Boro are looking at possibly appointing James Morrison (The player not the singer) as their new manager, which would be a very leftfield appointment.