Clermont's Simone wary of 'decapitator' Tuilagi in Top 14 clash
Powerhouse Tuilagi, 34, has been sidelined since mid-January with a knee injury and forms a dangerous centre partnership for the Basque club alongside fleet-footed Fiji midfielder Sireli Maqala.
Clermont are fifth in the table ahead of this weekend's game while 12th-placed Bayonne are without a win in six games and sacked coached Gregory Patat last week.
"They've definitely got X-Factor in Maqala," Simone told AFP.
"You've got Tuilagi there who's a bigger body who's probably going to just crash ball.