I would consider it. Especially if he was not getting any chance of playing here.
I honestly think he's ready to start figuring in first team squads now and getting at least parts of games.
Were we in a more secure position he might already be seeing action and once we are secure he may well do.
I dont know if the staff are keen on letting him go on loan though. I get the impression that they want to keeep him close. Especially after his injury. If he does become available on loan the list of clubs in the queue will be immense.
A lot depends on who comes in this summer though. Some will be off, that's for sure. Petrov and perhaps Reo Coker not getting a new contract. And there are rumours of the likes of Moussa Sissoko coming in.
I'd say in this particular instance, because is so good and so natural a footballer, we should keep Gardner close and just bring him into our first team over the course of next season.