Leg needing support to land (7)
I believe the answer is:
onshore
'land' is the definition.
('onshore' can be similar in meaning to 'land')
'leg needing support' is the wordplay.
'leg' becomes 'on' (cricket term, fielding positions).
'needing' means one lot of letters go next to another.
'support' becomes 'shore' (I've seen this before**).
'on'+'shore'='ONSHORE'
'to' is the link.
(Other definitions for onshore that I've seen before include "towards the coast" , "Away from the sea" , "Ron's hoe (anag.)" , "(Of wind) blowing from sea" , "coming in from water" .)