Scotsman involved with extremely datable woman (5)
I believe the answer is:
diane
'woman' is the definition.
'scotsman involved with extremely datable' is the wordplay.
'scotsman' becomes 'ian'.
'involved with' indicates putting letters inside (I've seen this in other clues).
'extremely' suggests removing the centre.
'datable' with its middle taken out is 'de'.
'ian' going within 'de' is 'DIANE'.
(Another definition for diane that I've seen is " woman".)
I've seen this clue in The Times.
Want a hint initially instead of a full solution?
Install my app