Permission to land on part of golf course (5,5)
I believe the answer is:
green light
'permission' is the definition.
(thesaurus)
'land on part of golf course' is the wordplay.
'land' becomes 'light' (light can mean to settle or land).
'on' says to put letters next to each other.
'part of golf course' becomes 'green' (golf courses have greens).
'light' put after 'green' is 'GREEN LIGHT'.
'to' is the link.
(Other definitions for green light that I've seen before include "Sanction" , "Given permission to proceed" , "What one has to go on" , "Signal for go" , "Signal to proceed" .)