Middlesbrough FC have enquired about the 22-year-old Scotland centre-back.
Having scored just 31 goals in 28 Championship games this season, Middlesbrough are in search for attacking intent to resolve their woes in front of goal.
Britt Assombalonga is attracting the interest of Premier League clubs, as the January transfer window enters its final days.
Sunderland have completed the signing of the 33-year-old on a permanent deal.
Boro's club-record signing has been linked with a move away from the Riverside Stadium in the final days of the January transfer window.
The 21-year-old is close to sealing a permanent move to Boro's Championship rivals.
Having already knocked Premier League side Leicester out of the FA Cup this season, Newport County are looking for another major scalp.
Various reports claim that Sunderland are set to complete the signing of the 33-year-old midfielder within the next 24 hours.
Middlesbrough FC have completed the signing of the ex-Premier League midfielder.
According to various media outlets, Boro are in for a busy few days before the end of January Transfer window.