This after trialist Tony Capaldi, a former Leeds loanee, failed to impress in the position in a pre-season friendly against Brentford.
After a loan spell at Swindon ended Sheehan was placed on the transfer list at Leeds and told to find a new club.
He was demoted from squad number 11 to squad number 34 and did not play a single game for Leeds' first team during the 2010-11 pre-season friendlies.