Rhyme in old English for 'Supervise' (7)
I believe the answer is:
oversee
'supervise' is the definition.
('oversee' can be a synonym of 'supervise')
'rhyme in old english' is the wordplay.
'rhyme' becomes 'verse' ('verse' can be a synonym of 'rhyme').
'in' means one lot of letters goes inside another.
'old english' becomes 'oe'.
'verse' placed within 'oe' is 'OVERSEE'.
'for' is the link.
(Other definitions for oversee that I've seen before include "Exercise supervision" , "Be responsible for" , "Superintend, manage" , "risk eyestrain?" , "take charge" .)