"I'm interested," said Lawrence. "He's a good player. But any possible deal will probably depend on which division we're in next season."
Robinson has been with Charlton for 10 seasons and was a name high on Lennie's list of targets earlier this season.
With City facing a two legged play of semi final in the next few days then transfer speculation is not a high priority. There will be time enough for that when we know which division we are in next season.
Alan Curbishley was full of praise for Robinson
"John has been a fantastic servant and will always be welcome back at The Valley. He deserves to leave on a free transfer to make it easier for him to select his next club."