Always surprises me how regularly this point needs to resurface. If you had a family to support and a couple/few good years left to earn a living -- before confronting an entirely new line of work from the ground level, with no experience -- wouldn't you try to make your family's nest egg as large as possible?
He played non-league football for 9 years, cut the guy some slack if Arsenal are turning his head with treble the wages and a three-year guarantee. He'd be borderline negligent to turn that down.