 In March, Constantine was sent to Oldham on loan to help him re-gain match fitness, scoring twice in seven appearances.On 2 July Constantine completed a free transfer move to League One side Northampton Town after falling out of favour with Gary McAllister.After only scoring three goals for Northampton and receiving boos from the club's own fans, he joined League One rivals Cheltenham Town on a one-month loan on 20 March 2009.