But he was limited to cameo appearances, and is now fourth choice striker behind the fit-again Billy Sharp, Andy Keogh and Steve Torpey.
"I'd like to thank Ismael and Michael Timlin for their effort and commitment while they were with Scunthorpe United," manager Brian Laws told the club's website.
"While they may not have played the amount of games they would have hoped for, I'm sure they've gained some experience from their involvement with a first team squad."