The 24-year-old will hope to have a better season at Blackburn than he managed at Blackpool last season.
The ex Villa youth star had been on trial at Ewood Park, scoring in the friendly against Oldham a couple of weeks ago, and has been signed to strengthen an attack that has already lost last season's top scorer Rudy Gestede to his old side, and with Blackburn in danger of losing star striker Jordan Rhodes as well despite the best efforts of Rovers to keep the Scot at the club.
In Delfouneso though, they have a different kind of player than the club have been using up front in recent seasons, with the 24-year-old's pace being an excellent weapon especially after Josh King was sold to Bournemouth this summer.
The striker was at Blackpool last season, having been released by his childhood club in 2014, where he had previously been on loan while at Villa, but could only manage 3 goals in 32 appearances.
Despite his struggles at Bloomfield Road, Delfouneso represents a smart piece of business by Rovers, having hinted at possessing the potential to become a top player when he was younger, and still being young enough to significantly improve.
The striker is Villa's youngest ever European player after arriving on the scene at 17-years-old, and he managed to score a handful of goals in his first few seasons at the Midlands giants, before a series of loans failed to help him progress as he would have liked.
Before heading to Blackburn for his trial, Delfouneso had been at Go Ahead Eagles in the Netherlands trying to earn a contract on the continent, say the Mail.