Complex sentence: His five-year contract with Kazan included allowing him to leave for the NHL, however, after negotiations in 2008 and 2009, Nikulin did not sign a contract with the Thrashers.
Split into simpler sentences: His five-year contract with Kazan included allowing him to leave for the NHL. However, after negotiations in 2008 and 2009, Nikulin did not sign a contract with the Thrashers.