Crossword Genius

We need a new one annually (4)

Ross

I believe the answer is:

year

I'm a little stuck... Click here to teach me more about this clue!

'new one annually' is the definition.
I can't tell whether this definition defines the answer.

'we need a' is the wordplay.
I cannot really see how this works, but
'a' is found in the answer.
The remaining letters 'yer' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for year that I've seen before include "26 fortnights" , "Pupil group" , "Orbital period" , "Manage" , "See 9" .)

I've seen this clue in the Evening Standard.
Want a hint initially instead of a full solution? Install my app