The 29-year-old Canadian from Ontario was drafted 180th (in the 6th round) in 2008 by the Pittsburgh Penguins.
Killeen is no stranger to the EIHL after spending last season at the Milton Keynes Lightning, recording a .909 save percentage in 54 games for the English club.
The shot-stopper also had a very successful spell in Italy with Ritten/Renon between 2016 and 2018, winning the Alps Hockey League, recording an impressive .931 save percentage in his final AlpsHL season.