Redknapp: Arsenal must decide by January whether to sell Van Persie
He explained in his column for the Daily Mail: "After being forced to sell Samir Nasri and losing Cesc Fabregas, Arsenal's board must decide if they want to make Van Persie the highest-paid player in their history, or sell up when he is at the peak of his powers. Wait until the summer and his value will decrease because his contract will be running down - or sell THIS January for maximum price? That is the power of the Bosman rule, where players hold all the aces.
"Arsenal have suffered from a number of will-he, won't-he transfer sagas over the years and the chance of Van Persie, 28, ending his career at Arsenal must be unlikely, especially if they are unable to compete for the big trophies.
"At his age, this is the biggest contract of his life and Arsenal fans, who have had to become used to their star names leaving the club in recent times, will know this is a pivotal moment. I hope he stays.
"The Premier League needs its star players, its poster boys. He is the form player and could be the next Dutchman to be the Footballer of the Year at the end of this season, although Spain's David Silva might have something to say about that.
"He would be worth around £30million this January and, because of the way he plays the game with that sweet left foot, would fit in at both clubs."