Maybe the transfer rules could be as the champions league..
Who played in a B3 match with another team and when he transferred an another team, he's ineligible for the B3 matchs..
Just an idea..
Doesn't make much sense on any level. Either you have a large amount of such monsters circulating around, in which case the measure is more or less irrelevant, or you're distorting the market so that the team that bought a given player first have an advantage throughout the tournament.
"I don't know half of you half as well as I should like; and I like less than half of you half as well as you deserve."