Waiting to sign: Gaston Ramirez
Ramirez joined Boro on loan from Southampton in January of this year, and he proved to be an excellent signing, becoming a important member of Karanka's promotion winning side.
After his successful loan spell, Boro have sought to make Ramirez's switch to the Riverside permanent, however they have hit some trouble over his work permit.
Ramirez has rediscovered his form at Boro
Ramirez's contract with Southampton lapsed at the end of last month and with it went his work permit, as he has not completed the required number of international fixtures with Uruguay to merit an automatic renewal.
As a result, Boro will have to apply through the appeals process, but Karanka remains hopeful that Ramirez will be granted a further right to work in the UK.
On his work permit application, Karanka said “I hope so but it is not in our hands.
Middlesbrough manager Aitor Karanka is hopeful Ramirez will be granted a permit
"He wants to come here, he knows that I want him here. He knows that the club and the crowd and everybody here wants him. So it’s just for us to wait for his work permit.
“When he came here in January he was having a bad moment in his career and here with us he helped us a lot last season."
Ramirez has not enjoyed much success in England since making the switch to Southampton from Bologna in 2012.
He joined the Saints for an eye-watering sum of £12 million after impressing at the London 2012 Olympics with Uruguay, but he failed to match expectation, struggling with just six goals in his entire Saints career.
He was sent on loan to Hull City for the 2014-2015, scoring just once in that time, before joining Boro in 2016, where he has since shown glimpses of the form that had originally earned him a big money move to the Premier League.
Ramirez made 18 leagues appearances for Middlesbrough last term, scoring seven times in the process.