A forgotten but very important piece of the equation:
Suddenly Gay might be faced with this possibility: opt out and sign elsewhere for 4 years and $52M ($13M/per) or sign in Toronto for 5 years and $57.5M ($11.5/per).Gay will make $17.8 million this season and has a player option for next season ($19.3 million) — at age 27 he is expected to opt out, become a free agent and seek the security of a longer deal. The Raptors can offer five years, other teams four.
Would be the same type situation in 2014-15 if he picked up his option for next season.
Also, any team trading for him would have this same option. Suddenly a team like Charlotte might have interest in giving up some assets to land him knowing they can offer than extra year no one else can.