The Argentine, who represented the Spanish outfit from 2005 until 2005, has claimed that Iniesta and Abidal are the best of their kind in world football.
"Iniesta does things that nobody else does. He is just incredible," he told Radio Marca.
"Barcelona are a great side with outstanding footballers in their ranks. In my opinion, when Abidal was playing, he was the best left-back in the world. Barca play as they train and they are amazing."
Riquelme scored 17 goals in 51 games for Argentina.