Campbell is currently a free agent after his sensational exit from Notts County, where he decided to walk out on a five-year-contract following his debut for the League two outfit.
But Redknapp admitted he can understand the difficulties that faced Campbell after a career at the highest level.
"Obviously they are a forward-thinking club but it is difficult when you have been a top player and you suddenly drop down all those divisions," he said.
"Obviously he has looked at it and thought 'what am I doing here' but to be fair to him, he's walked away from a big contract so money was not the big factor for him."
"I couldn't bring Sol to Tottenham, it's impossible. All I said was that I think he can still play Premier League football somewhere," said Redknapp.
"It would be a bigger problem than it would be worth (bringing Campbell to Spurs), but if a manager rang me up from another Premier League club looking for somebody, I'd say 'take him'."
"No. I am sure he will keep himself fit and if a club has got any sense they will get him in now, let him train and do a deal for January," he said.
"When January comes round I would recommend him to anyone."
