As excitement builds ahead of Euro 2020 for the fans, players are making final preparations ahead of the big summer tournament.
Fans will no doubt be making the most of the summer football after last year's tournament absence due to the COVID-19 pandemic. They may clock one or two familiar faces as the tournament progresses.
With that in mind, let's find out who which former Middlesbrough players will be attending the tournament with their respective teams...
TOMAS KALAS
The 28-year-old defender will represent Czech Republic at the Euros and is likely to face England in their Group D match on Sunday 22nd June.
Kalas, who now plays at fellow Championship side Bristol City, spent a season and a half on loan at Middlesbrough.
He moved to the Riverside in January 2015 for the remainder of the season helping Boro reach the play-offs in a pivotal right-back role, where they'd eventually lose to Norwich City in the final.
After impressing in his half a season, Aitor Karanka moved to bring him back to the club for the following season to the delight of fans.
However, his place in the side would eventually be taken by Emilio Nsue and Kalas would mainly be used as cover in case of any absences in defence.
As Boro sealed promotion to the Premier League, a move for Kalas never materialised and he joined Fulham on loan.
MARTEN DE ROON
It seems a long time ago since Middlesbrough's 2016/17 Premier League season where they were relegated at the first time of asking.
One man who can hold his head up high from that campaign is Marten De Roon.
The 30-year-old signed for Boro for a reported £12 million fee from Atalanta and he went on to score five goals in 35 appearances from holding midfield in his one season at a very lacklustre Boro side.
He turned out to be a popular figure on Teesside and fans were hoping he could be tempted to stay the following season to aid Boro's promotion bid.
As Garry Monk took the reigns of the newly relegated Boro, De Roon sealed a move back to Atalanta and became a regular in a Champions League side and the national team.
He'll represent The Netherlands at this summer's tournament.
MARTIN BRAITHWAITE
You wouldn't find anyone in the Teesside area that could've predicted the Dane to go on and play for Barcelona after two turbulent seasons with Middlesbrough.
Many anticipated Braithwaite would play a huge role in firing Boro back to the Premier League at the first time of asking.
After initially impressing in the first half of the season with six goals in 21 games, Braithwaite would fall out of favour under Tony Pulis, who seemingly wasn't impressed with his attitude.
Braithwaite was shipped out on loan to French side Bordeaux for the remainder of the season.
It was a repeat scenario the following season as the forward spent the first half of the season on Teesside only to be sent out on loan again, this time with Spanish side Leganes where he'd eventually make a permanent move.
The 29-year-old had his 18 million euro release clause triggered by the Catalan giants where he still plays alongside Lionel Messi. Braithwaite will be part of Denmark's squad for the Euros.
ADAMA TRAORE
There was plenty of Boro fans who were sorry to see the rapid Adama Traore move on to pastures new.
In his second season with Boro, Traore sprung to life spearheading Tony Pulis' side into the play-offs leaving Championship defenders for dead.
It seemed like the penny had dropped for Adama who was attracting a host of Premier League clubs. Wolves coughed up for the speedster for a reported £18 million and a move to the Premier League was sealed in 2018.
Five goals in 34 appearances might not sound like much, but the Boro fans remember him for his eye catching skill and blistering speed. A skillset that won't be matched by many other players on the planet.
Traore will represent Spain at the Euro's where he currently has five caps to his name.
CONNOR ROBERTS
It was a very unmemorable spell at Boro for the Swansea City full-back who joined on loan at the beginning of the 2017/18 Championship season.
Roberts signed on a season-long loan but made only four appearances by January. He was recalled by his parent club amid an injury crisis where he'd play 11 games for the Swans between now and the end of the season.
The 25-year-old is now fully established in the right-back position for club and country with over 150 appearances for the Swans and 26 caps for his country.
Roberts will be travelling with the Welsh squad for the Euros.
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