Osman wrote in the Daily Mail: "He has always conducted himself in the correct manner and he's a top guy as well as a top professional.
"I know that he's loved being at Everton and I am sure he'll miss us as much as we'll miss him. However, he hasn't gone yet and he'll still have a part to play in our important run-in to the end of the season.
"Come to think of it, I don't know why Phil is called 'Fizzer', he just brought it with him from Manchester United. It's something he calls himself more to be honest as I just call him 'Nev' ...and a few other names!"