While I don't believe Tomáš Kalas has officially returned to Chelsea yet from his utter failure of a loan at 1.FC Köln, it's a safe assumption that will happen fairly soon, at which point he will most likely head out on loan again. It might be tempting to think that Kalas could stick around Chelsea, especially with Gary Cahill's (and to a lesser extent Branislav Ivavnovic's) poor form of late, but the number one thing Kalas needs is playing time and he has a much greater chance of getting a decent amount of it on loan rather than with Chelsea at the moment.
Local rivals Queens Park Rangers had been rumored to be interested in the 21-year-old center back's services, but Harry Redknapp poured cold water on that earlier.
"He's a good player, I like him, but I haven't spoken to anybody at Chelsea about him. We haven't made any approach for him."
-Harry Redknapp; source: West London Sport
So now, it's onto Boro where Patrick Bamford and Kenneth Omeruo are already flourishing.
Boro are set to finalise a loan move for promising Chelsea defender Tomas Kalas in the next few days, The Gazette understands.
A slight complication is the presence of Jamal Blackman (making it the maximum allowed three Chelsea players at Boro already), but the young goalkeeper's loan ends on January 17 and there have been no rumors of that getting extended, so Aitor Karanka will be free to dip into the talent-well that is Chelsea once again.