Didn't think he'd lasted ten years at any one club and he would have picked up plenty of transfer bonuses down the years. Why would he deserve / get a testimonial?
If you check out Boston Town's twitter, JJ is leading a game including "former players and celebs". He also runs "find a jewel workshops", so despite the word " testimonial" being used within the advert, I doubt its anything to do with a match for him in the true sense of the word. To me it looks like a pre season game being dressed up as something bigger than it really is, more likely a glorified trial with a few "names" touted in order to create interest. I could, of course, be totally wrong, and I've just offended many people! It won't be the last time!