I'm in two minds about this.
Klopp is starting to make an impression and hopefully consistency with it. If SG wants to come back and learn and apply himself at the Academy and work his way up then I'm for it. If not, then I'd be concerned that this could upset the balance. Things are good and improving, why upset that to accommodate someone else.
Playing is a different discipline to coaching and managing.
I think the impression a lot of outsiders got of Stevie when he was at Liverpool was that he behaved like he was strutting around the place with the biggest swinging dick. But there's a new guy in town, and he's packing more length (and probably more girth too) than Stevie. If Stevie can take not being the biggest guy on set anymore and join the queue with the rest of the fluffers, then this might work. He's not the main attraction anymore, he has to do the bending over.