Money I bet has nothing to do with this. Gareth has gone because he can see that Doncaster are a club on the up. Brand new stadium and signing some great players, they will push for the play-offs at least next season. Tranmere meanwhile, well, they have about 8 contracted players, no manager, no money and are a club who pleases themselves in selling the best players. Roberts can see we are going nowhere and after 7 years has thought to himself I've done enough for this club, it's time to go.
Thanks for all the memories Gareth and all the best.