Freedom of contract rather than Bosman but similar. It was the first I think, just as Chris Makin was the first to be able to move overseas for nothing. A bit like us finishing third in the first season of the play-offs...
We have plenty of firsts: founder member 3rd div north, 4th div, premier league, as you say first to get caught by freedom of contract and first I think to play semi final of FA cup at Wembley (along with 3 (insignificant) others.
Good pub quiz question in there somewhere.