Curled foot - Pls help!

[OutbackQuackers]

Male call duck is hopping around on one foot while his other foot is curled up. His eyes are also watering, making his face crusty.
It started a week ago and at first I thought it was bumblefoot but now I'm not so sure. I've been soaking his foot in salt water every day for the past week and it hasn't seemed to help. I've put him in a carrier with clean bedding so the others don't bother him.
But he seems to be getting worse(weaker) every day.
I have no idea what to do.
He is 6 months old and is still able to eat and drink

 

[Firsttimehens1234]

Drake is hopping around on one foot while the other foot is curled up.
It started a week ago and at first I thought it was bumblefoot but now I'm not so sure. I've been soaking his foot in salt water every day for a week and it hasn't seemed to help. I've put him in a carrier with clean bedding so the others don't bother him.
But he seems to be getting worse(weaker) every day.
I have no idea what to do.

Can you post a picture of the foot?
How old is the chicken?
Does it still see other chickens or has it been totally isolated for the past week,if so it could become depressed and that could result in it getting more weak.
Does it still eat and drink?

 

[OutbackQuackers]

Can you post a picture of the foot?
How old is the chicken?
Does it still see other chickens or has it been totally isolated for the past week,if so it could become depressed and that could result in it getting more weak.
Does it still eat and drink?

He's about 6 months old and still eats and drinks. The carrier is inside the duck house so he's still with the other ducks.