Hydraulic saw hooked up to tractor?

[Diy mechanic mike]

I have a hydraulic chainsaw and stick saw and was wondering if I could hook it up to my tractor for use while bushhogging? My tractor is a massey ferguson 3165 with loader, so it has external pump (17gpm@2000rpm) and the internal hydraulic pump (4.5gpm@2000rpm) which way would be best to make this work and how exactly?
Thanks mike