The Teessiders fought off competition from Premier League clubs to secure the services of the highly-rated 24-year-old, who put pen to paper on Monday evening in a £15m deal.

The striker scored 30 Championship goals in 47 starts for the Midlands club after joining from Peterborough in 2014.

"There’s a good feeling around the place. From the minute I walked in it felt right."

Britt Assombalonga

A delighted Assombalonga said: “I can’t wait to get started and train with the boys. I’m glad it’s completed and I can focus on what’s ahead now.

“I can’t wait to meet the manager and get ready for next season. There’s a good feeling around the place. From the minute I walked in it felt right.”

The striker was also quick to thank the Nottingham Forest fans and wish his former club all the best for the new season.

“I want to thank the Forest fans for being behind me, especially after my injury,” he added.

“They gave me a chance in the Championship and I want to say thanks to them and wish them all the best for the season.”

It's proving to be a busy summer so far for Boro as we prepare for an assault on the Sky Bet Championship.

Assombalonga becomes Garry Monks' fifth signing, following the permanent transfers of Jonny Howson, Cyrus Christie and Martin Braithwaite as well as a year-long loan deal for Connor Roberts.

Head to on Tuesday for an exclusive interview with Britt, as well as photos from his first day as a Boro player.