14.2 boat for sale no mast

Hey guys, brand new here. Ive been in the market for a sailboat for a while. I think this might be the boat for me, I called the owner early this morning. My question is this: Is it at all allowed for me to weld the existing mast? I have a welder and some experience, but I don't know if this is a bad idea. There's a picture of the broken mast on the post. Thoughts? Any other advice?
That's crazy. I bought a new mast via a Catalina dealer in ~2005 for around $5-600. A tree limb had bent the original from the boat that I inherited. I now store the mast in the garage over winter.