The Argentine retired earlier this season but may make a comeback to the sport, with the relegated Palmeiras keen on his signature.
“He’s a big name, a reference,” Kleina told Fox Sports.
“Who would not want to have a player of that quality? Palmeiras made a proposal, we will wait for his decision. The only situation that we need to see are his conditions.
“Long time not playing. The coach who came to Boca, Bianchi, loves Riquelme and has affinity. I see with good eyes what is happening.”
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Liverpool have unveiled their new home kit for next season, sticking with the hugely popular retro styling of the current shirt.
The reputation of the Premier League means it is the most popular and one of the most watched leagues in the world.