Replacement grip for Yes putter?

Putter grips are a very personal thing.
Some like the really chunky ones, some like the super slim ones.
You'll be very lucky to find a genuine Yes grip these days.
Pretty much any grip will go on any putter.
Go to a shop that has a few putters and grips on display and find one that feels right.
Find out what grip it is and get a Pro to source one and fitmit.
Or you can do it yourself - plenty of YouTube action to make it simple.