Fiorentina strikeris set to sign a contract extension with Fiorentina as the Serie A side want to ward off the interest of Leicester City that were one of the clubs interested in signing the Croatian striker last summer.A new € 50 million release clause will be included in, the club’s president Andrea Della Valla has recently confirmed.​Kalinic, a former Blackburn striker, is one of the best strikers in Serie A. Last week he scored a stunning backeheel goal against Sassuolo andwith Fiorentina so far this season.La Viola also want to extendstay at the club offering him a contract extension. The promising Italian winger is having his best top flight season having already netted 8 goals in 21 games. The 22-year-old star has attracted the interest of Chelsea and Fiorentina may include a release clause in his contract too.Lorenzo Bettoni @lorebetto