It wouldn't be any surprise if Dan got "an offer he couldn't refuse" from Ipswich, which was so good it changed his mind about riding over here..
With the added bonus of riding at a GP track, (which will be brand new to many of his challengers for the World Title)...
Basically. "A Self employed person decides to take up a good offer of a contract", and nothing more than that..
Poland offer up two year contracts knowing what the landscape will be two years in advance, and know that, regardless of success, they won't be penalised team building wise..
The UK don't know from one season to the next what the landscape will look like, and, regardless of zero success, you can stilll be penalised team building wise..
Don't hate the player, hate the game...