My gander’s swollen foot and limp

[Roseyquails]

I bought a male Toulouse goose around a week ago and just a few days ago he started limping and today I noticed he had a swollen foot, does anyone know what it could be as he has not fallen or got himself caught in anything. Could it be a virus ? Anything helps

 

[Goosebaby]

Could you post some pictures of it?