You can buy a new pin bushing / lift arm repair end and have it welded onto the draft arm. No big deal and a very common occurrence. Tractor Supply sells them with their 3PH parts assortment. CountyLineｮ Lift Arm Repair End, Category 1 - Tractor Supply Co.
It appears he broke the draft arm at the weld-on ball socket. Most draft arms I've seen have the ball end socket butt-welded to the draft arm. If that's the case I'd cut it off and weld-on a new end. There are various draft arms repair parts available.
Here's another link to a supplier with with 3PH and draft arm repair parts & solutions: Three Point Hitch Parts
