Door handle replacement

The door handle on an internal bedroom door has been damaged in my flat. In theory it might be possible to repair it, but I would be happy if a new handle is put on. I am attaching a photo of the door handle so that you can see which one to buy. The price I am putting up for doing the job does not include the cost of a new handle, which I would of course pay for on top once a price for the handle is agreed.