A fee has been agreed between the two clubs and Howson will have a medical this afternoon before completing the move.
The former Leeds midfielder had been linked with a return to his old side this summer to strengthen the squad ahead of the new campaign.
But the 29-year-old will now link up with former Leeds boss Garry Monk at recently relegated Middlesbrough as they look to return to the Premier League at the first attempt.
— Middlesbrough FC (@Boro) July 7, 2017
Howson played 35 times for Norwich last season in the Championship, scoring five goals, and Leeds fans were generally excited to see their former player once again at Elland Road wearing their white strip.
A move to Middlesbrough with Monk, who perhaps initiated Leeds’ interest in the midfielder before leaving the club in the summer, has a number of the club’s supporters riled up.
Others maintain that Leeds were not actually in for Howson, feeling that the club could not afford to sign him.
Howson's not moving back to Leeds. Let it die you saps. Next you'll be hoping Viduka's coming over for a medical. #lufc
— kieran poole (@kierantpoole) July 7, 2017
Monk after Howson….Gradel now. He must have listened to us Leeds Supporters. No mind of his own?
— WhiteSoul (@EllandRoadGlory) July 7, 2017
Is Garry Monk signing former Leeds-captain Jonny Howson some intricate payback?
— Trialist Dobalina (@Linhem) July 7, 2017
Leeds fans we need to realise we ain't getting, Snoddy, Howson any1 like that, owners not gonna pay that much need to accept it #lufc
— Kirsty Stanley (@stanners_1982) July 5, 2017
People who say Jonny Howson has 'chosen' Boro over Leeds. There was never a choice. #lufc
— Scott Eaglen (@ScottEaglen) July 7, 2017
Jonny Howson. The Leeds fan who's chosen little old Boro over that MASSIVE club he supports 🐍🐍🐍💅🏻 #UTB 💋
— Jenni (@jenniboro) July 7, 2017
— Adam Braid (@AMBraid) July 7, 2017
We weren't even wanting to buy him…
— Aaron Gosling (@AaronGosling23) July 7, 2017
Howson can go f**k himself too if he wants to play for Monk and that Small Town in Yorkshire!
— Robie (@TheRealRobNeal) July 7, 2017
And then there was this discussion…
Just remembered. Garry Monk wears Toms
— GUYSLEY (@Guysley_) July 7, 2017