I think this whole idea should be expanded and could be a pipeline for a little more income for the game.
First every player should have a choice of a few basic models for their "manager". Supporters would have extra choices. This manager would be displayed on the teams front page. Then there should be the option to further customise the manager. Different colored suits. Different styles. Sunglasses, hats, odd hairstyles, umbrellas, laptops, I-Phone, bling, earings, actually anything. The deal would be that all these extra customisations would cost "manager points". You would accumulate some every season. Perhaps get a bonus for certain achievements - championships, players on all star team, players on national teams etc Players should also get a big bonus for being a supporter. Plus you could always buy more points with cash in the manager shop.
I think it would be great to extend this to players as well. Headbands. Tatoos. Goggles. Facemask. Bandages. Scars. Hair styles. Hair colors. Shaved heads. Beards. Anything that could be realistically changed. And as always if you really want your entire team to sport green mohawks then you can purchase the extra points at the manager shop.