Walker, who has a star-studded testimonial match coming up this month said: "This summer, I'm going to get myself fit and then decide exactly what I'm going to do.
"I'll see the offers I've got as a few people have asked me if I want to come back and play.
"For me, it's playing football, not necessarily the level, it's playing football.
"I don't know if the body will keep going but I might give it a go."