Suarez has been a controversial figure since joining Liverpool from Ajax in 2011 as he was involved in a race row with Manchester United's Patrice Evra and received a 10-game ban for biting Chelsea's Branislav Ivanovic at the end of last season.
That suspension meant the prolific striker missed the opening seven games of the current campaign, but he has hit the ground running since his return, scoring six goals in five Premier League matches.
"He's out on his own (as the best)," he told ESPN.
"The only player who comes close to producing what Luis has done in a red shirt is Fernando Torres — but Luis just pips him."
"Luis is in good form," he added. "The team are playing well, so (losing him in) January won't be a problem.
"But come the summer, I think depending how Liverpool have done will determine what goes through Luis' mind.
"His goals, his performances and his form will be the key to whether we finish in the top four."
