Tries to follow Reen in the future entrances (2-7)

I believe the answer is:

re-entries

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'the future entrances' is the definition.
I know nothing about this answer so I can't judge whether this works.

'tries to follow reen' is the wordplay.
'to follow' is a charade indicator (letters next to each other) (some letters go after or follow others).
'tries' put after 'reen' is 'RE-ENTRIES'.

'in' acts as a link.

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I've seen this clue in the Sydney Morning Herald.

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