Sampdoria President Massimo Ferrero has played down a row between new signing Samuel Eto'o and coach Sinisa Mihajlovic after the striker refused to take part in a training session. Mihajlovic had cancelled the squad's day off and imposed a double training session Monday following a 5-1 defeat at Torino. After the morning session, Eto'o informed Mihajlovic he had a prior engagement and, following a heated exchange, left the training center and failed to return for the afternoon session, according to reports. Ferrero tells Italian news agency ANSA "it was only a difference of opinions and, truthfully, a small one too. We are calm. Samp is very stable." Eto'o joined Sampdoria last week from Everton and made his debut in Turin, coming on for the final 20 minutes. (For more sports news andupdates, followAhramOnlineSports on Twitter at@AO_Sportsand onFacebookatAhramOnlineSports.) http://english.ahram.org.eg/News/122044.aspx