QPR are six points adrift of safety heading to Swansea on Saturday but Redknapp remains confident of staying up - and keeping Samba.
"When people say he is a risk and you're putting the club in a difficult position if it went down, you could sell Chris Samba for what you paid or more at the end of the season if you wanted to," Redknapp said. "Without a shadow of a doubt.
"I had a chairman ring me a week ago asking me about him and saying 'what would you do if you went down?'
"I said 'we ain't going to go down' but he said 'well, we want to sign him...if we'd have known he was available'. I am talking about a big club.
"There will be big clubs wanting him. Big clubs, not a danger.
"I could see a club not too far away 18 months ago and I thought 'surely they've got to take Samba?' I was always after Samba at Tottenham. Always."