Chelsea investigate Yossi

    

   Possible motives for the abuse include kissing the Arsenal badge while on loan, and a perception that he is denying Frank Lampard and younger members of Chelsea's squad a place in the team.The 32-year-old tweeted  after the game that "sometimes people are crossing the limit before adding:I'm sure the club will sort it.Benayoun also tweeted  that he had been booed since defending Fernando Torres in an interview following Chelsea's game against Sparta Prague .Benayoun, who has made 12 appearances this season after a loan spell at Arsenal in 2011-12, was booed during the 2-2 draw with Liverpool on Sunday.Chelsea have a zero-tolerance policy on racist and discriminatory behaviour at Stamford Bridge and have, in the past, banned supporters who have breached it.After returning to Chelsea from a loan spell at West Ham this season, Benayoun is believed to have been targeted by a section of Chelsea's fans.There is no evidence of racism at this stage, but Chelsea are examining previous games to establish the nature of the abuse.