Boro broke the bank to make Alf Common the first £1,000 footballer - a move which caused a stir at the time.
Making the short move from Sunderland, Common's switch to Boro was widely condemned as almost immoral and the issue was raised in Parliament.
A clinical forward, Common's goals helped Boro stave off relegation with his record-breaking transfer paying dividends.
Common yielded 65 goals during his five-year stay with Boro, and was top scorer in his first full season with us, forging a great partnership with Steve Bloomer.
His form for Boro prompted for England against Wales in 1906 having previously earned just two caps for the national side.
Becoming the first Boro player to represent the Football League, Common eventually lost his place in the side due to the emergence of George Elliot.
Common then move on to Woolwich Arsenal before his career concluded with Preston.
He passed away in April 1946, and was selected as one of the 100 Football League Legends in 1998.