Definition of "unfinished"

Holloway has unfinished business in the Premier League after relegation last year and he will make a swift return if he can overcome West Ham a week on Saturday. Sam Allardyce, the West Ham manager, will be acutely aware that when the stakes are high, Blackpool are simply formidable.

2012 May 9, John Percy, “Birmingham City 2 Blackpool 2 (2-3 on agg): match report”, in the Telegraph‎