He is just having to face the reality that marathons are becoming dominated by superfast young East Africans. Meb won NY against an aging group of past champions, and may not have won at all had Kwambai not dropped out at mi 24 (seriously, Kwambai has a PR that is minutes ahead of Meb's). Paris, London and Rotterdam will all require a 2:05-2:06 to win (in good conditions), if not be in the top 3. Meb has never come close, and there are plenty of E. Africans who have, and have done so very recently. Why would elite directors offer Meb a ton of cash to finish 3-4 minutes behind the leaders?
Meb could race wherever he wants to, but cannot expect to get the same red carpet that people with recent races in the 2:05-2:07 range get.
This has to be one of the more laughable posts on here. Meb won an Olympic silver against all of those "superfast young East Africans" and won NYC just over a year ago. Gharib, whom he beat in NYC, ran 2:05:27 in London 6 months before NYC and, do you need me to remind you, is the reigning Olympic silver medalist. Does he fit your definition of an "aging past champion" or is he a legit athlete Meb beat in NYC?
Also, Cheruiyot (you know, the guy who was 2nd to Meb in NYC) won Boston in 2008 in 2:07:45 so it's not like he was some washed up bum well past him prime.
Boston should be begging Meb to run there and shame on them for snubbing him.