Middlesbrough hope to tie up a deal for Valencia striker Alvaro Negredo after jetting out to Spain for a pre-season training camp.
The Teessiders have been in talks over the 30-year-old former Manchester City frontman for some time as they look to secure an initial loan deal.
Press Association Sport understands those discussions will continue in Marbella, where Boro will play three games starting with Tuesday night's friendly against Real Betis.
Head coach Aitor Karanka has already boosted his squad for life in the Premier League with six new additions in the shape of Victor Valdes, Viktor Fischer, Bernardo Espinosa, Marten de Roon, Jordan McGhee and Antonio Barragan, and he is not about to stop there.
The club is edging towards an agreement on Negredo, while they are also close to landing both Borussia Dortmund defender Neven Subotic and Uruguayan midfielder Gaston Ramirez.
Middlesbrough's busy summer has continued with the acquisition of Valencia defender Antonio Barragan on a three-year deal.
The 29-year-old right-back, who spent time with Liverpool as a teenager, is the sixth player to move to the north east in this window as Aitor Karanka shapes his squad ahead of their return to the Premier League.
Barragan has joined Victor Valdes, Viktor Fischer, Bernardo Espinosa, Marten de Roon and Jordan McGhee in Karanka's ranks and Boro hope his old Valencia team-mate Alvaro Negredo can follow too, with the clubs working on an initial loan deal.
Barragan left Liverpool in 2006 and played for Deportivo and Real Valladolid prior to joining Los Che, whom he made over a century of appearances for.
Manager Karanka signalled his pleasure at the latest capture:
I am really pleased he has signed. He is a player we know a lot about and he is a good addition to the squad. He is a good lad, and he has played a lot of games for Valencia.
He knows this country as well because he was at Liverpool as a young player. He is a good signing for us.
Premier League newcomers Middlesbrough are in talks to sign Valencia defender Antonio Barragan.Read the full story ›
Tomas Kalas has admitted he would have to think seriously about a permanent switch to Middlesbrough if he was offered the chance to play for the club in the Barclays Premier League.
The 23-year-old Czech Republic international has spent the last 16 months on loan at the Riverside Stadium from Chelsea, where he signed a new three-year deal last summer.
However, the defender has made only two starts for the Blues since arriving from Sigma Olomouc in January 2011, compared with the 47 appearances he has made for Boro.
Kalas told the Evening Gazette: "I don't know how many games I've played since I came - probably around 40, which is not bad in one and a half years.
"That's why I came here, to play games and hopefully I'll keep playing next season - maybe here.
"If I could get the deal [to move to Boro permanently], I would really think about it. Yes, why not?"
TEAM NEWS: Dimi, Nsue, Ayala, Gibson, Friend Clayton, Leadbitter, Stuani, Ramirez, Adomah, Nugent.
Subs: Agazzi, Forshaw, Kalas, Downing, De Sart, Rhodes, De Laet.
Jordan Rhodes' stoppage-time winner gave Sky Bet Championship leaders Middlesbrough their sixth straight victory as they beat already-relegated Bolton 2-1 at the Macron Stadium.
Boro were trailing to the club propping up the division when Josh Vela scored but after Rhodes levelled in the 73rd minute, Boro mustered another late winner for the second time in five days, this time through their £9million striker.
Middlesbrough head coach Aitor Karanka looks to be heading for the exit after a failed attempt to smooth over a bust-up.
Press Association Sport understands the Spaniard reported for duty on Saturday morning ready to take training ahead of Sunday's Sky Bet Championship trip to Charlton, a day after walking out following a stormy meeting with his players.
Sources close to Karanka, who has previously found himself at odds with former assistant Craig Hignett and midfielder Albert Adomah during his 28-month reign, claim he arrived ready to apologise for his part in the disagreement and smooth things over.
However, he did not lead training and the club later released a statement confirming he will not be in charge of the team at the Valley.
Middlesbrough have confirmed manager Aitor Karanka did not take training on Saturday morning ahead of their trip to Charlton on Sunday.
The Spaniard reportedly walked out of a team meeting on Friday saying he no longer wanted to manage the players.
Middlesbrough Football Club can confirm that Aitor Karanka did not take training on Saturday morning.
Assistant Head Coach Steve Agnew will take charge of the team for Sunday’s fixture at Charlton Athletic.
We appreciate supporters will want to know further details, but at this time the club cannot make any further comment and is solely focused on Sunday's game at The Valley.
Middlesbrough have confirmed a proposed move for Blackburn striker Jordan Rhodes has collapsed over personal terms.
Aitor Karanka's Sky Bet Championship side had a reported £11million bid for Rovers' Scotland international accepted on Friday night and he was left out of Paul Lambert's squad at Oxford on Saturday.
However, the move has hit the rocks following discussions between Boro and Rhodes.
A short club statement posted on Middlesbrough's official website read: "The club can confirm that we have held talks with Blackburn Rovers striker Jordan Rhodes over the weekend but have failed to agree terms."
Championship promotion hopefuls Middlesbrough have brought in Gaston Ramirez on loan from Southampton for the rest of the season.
The Uruguayan moved to the Premier League in 2012 for £12million but failed to make an impact at St Mary's.
Last season the skillful playmaker had a spell on loan at Hull but once again struggled.