Hi and welcome!!
Fred is gorgeous!
CMB pointed out perfectly the problems of the bird cage. Maybe adding enrichment could stop the chewing problem. Starting by putting a deeper layer of substrate could help, as a lot of hamsters like to burrow. I don't know the size of the wheel, but being a syrian Fred will need at least a 20 cm wheel, you could add dow chews as whimzees, tunnels as loo rolls and other things that could keep him away from the bars.
You can also take a look at this thread
Managing Bar Chewers