The six-strong restaurant group will be controlled by managing director Mankarious, formerly operations director of Gourmet Burger Kitchen until earlier this year, under the group Kefi Limited.
It is thought the new owners will look to continue with the fast-casual, healthy eating chain’s steady expansion, which up until now has been overseen by managing director Liz Williams.
Capricorn acquired The Real Greek owner Clapham House for £30.4m in September 2010, claiming that the chain would need ‘significant investment and time’ to reinvigorate the business.
It is thought that Capricorn, which also owns GBK and Nando's, has been discussing offers from interested parties since March this year.
Having first launched in Hoxton in 1999 under the eye of chef Theodore Kyriakou, The Real Greek has grown to six London sites in Westfield, Bankside, Marylebone, Spitalfields and Covent Garden.
The group sold its Putney branch in June 2010 to buffet operator Preto.