Gaming / office chair- plearead description as needs fixing! (Coleshill B46)

The chair itself is in really good condition but the housing that holds the wheels in place has broken on one of the wheels. The wheel itself is fine it’s just the housing that holds it in place that’s broken.

I’ve tried to show this as best I can in the photos and last photo shows how it should look.
We did attempt to fix it ourselves but didn’t know how to!

Offering before it goes to the tip in case it’s an easy fix for someone as it’s a shame to throw an otherwise good chair away.

It may be useful to someone who doesn’t need it to wheel around and could take the other wheels off and use a static chair?

Collection from Coleshill B46 3 as soon as possible please.

Also listed on other sites.