Chelsea have agreed to send defenders Tomas Kalas and Nathan Ake on loan to Middlesbrough next season, Goal understands.

Czech Republic international Kalas impressed in 17 Championship appearances during a temporary spell at the Riverside Stadium last season, even as Aitor Karanka’s men fell short against Norwich City in the play-off final at Wembley.

Ake, meanwhile, acquitted himself well for Reading in a brief stint last term, making five appearances in April to help the Royals maintain their Championship status.

Both are well down the first-team pecking order at Stamford Bridge but Chelsea’s decision to loan them to Middlesbrough is further evidence of the close relationship between Jose Mourinho and Karanka, his assistant at Real Madrid.

Last season Boro enjoyed the services of Kalas as well as fellow Blues youngsters Patrick Bamford and Kenneth Omeruo.

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