Not very masculine offshoot, strangely rhymes with 'boot' (7,3)

I believe the answer is:

mothers boy

'not very masculine offshoot' is the definition.
(boy who's very attached to his mother)

'strangely rhymes with boot' is the wordplay.
'strangely' indicates anagramming the letters.
'with' means one lot of letters go next to another.
'rhymes' after 'boot' is 'bootrhymes'.
'bootrhymes' with letters rearranged gives 'MOTHERS BOY'.

I've seen this clue in The Guardian.

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