Recall of purpose in competition is mentioned (5,2)

'is mentioned' is the definition.
I can't tell whether this defines the answer.

'recall of purpose in competition' is the wordplay.
'recall of' says the letters should be written in reverse.
'purpose' becomes 'use' (synonyms).
'in' means one lot of letters goes inside another.
'competition' becomes 'comp' (I've seen this in other clues).
'use' back-to-front is 'esu'.
'esu' going inside 'comp' is 'COMES UP'.

Can you help me to learn more?