Messi is now well inside the final 18 months of his current deal.
"[Messi] will renew, as I've always said," he told Cadena Ser's 'Que t'hi jugues!' programme. "He is happy in Barcelona, he feels comfortable in the team and the environment is perfect.
"I don't have any doubt [that he'll sign a new deal]. Looking into his eyes I see that he is happy at Barcelona.
"I don't want to speak too much, though, as I know that there are many repercussions with this topic.
"[Iniesta] will also renew and he'll do it in his own time.
"I have no doubt that he'll renew and neither does he."