The son of West Ham United co-owner David Sullivan, Jack, has revealed Nottingham Forest didn't want to sell Michail Antonio and it was the 25-year-old's determination to push a move through that ultimately got the deal done, according to his regular column on the club's official website.
Indeed, West Ham signed the Forest winger on Deadline Day in arguably their best signing of a quartet that also included Victor Moses, Nikica Jelavic and Alex Song.
Sullivan told the West Ham site: "The fans are going to be excited by the signing of Nottingham Forest winger Michail Antonio and he has great potential. He has come from non-league to the very top.
"He scored a lot of goals in the Championships and created a number of assists last season and Forest didn't want to sell him.
"But we wanted him to come to us and his personality has shown that he is not prepared to give up and wants to compete at the highest level."
The fact Nottingham Forest held onto Antonio until Deadline Day and reportedly rejected offers from West Brom among others for the 25-year-old, according to the Express and Star, certainly back Sullivan's claims up.
And it should come as great comfort to Forest fans that the City Ground outfit wanted to hold onto their best player right until the end.
That said, it doesn't soften the blow of Antonio's exit, nor does the knowledge it was his perseverance to join West Ham that ensured the deal went through.