Redknapp says he's never seen a fitter player and that a failed medical can't be the reason for the deal falling through.
Reports seem to indicate that Remy failed a medical and the Reds weren't prepared to take the risk, with reports saying personal terms were agreed along with a shirt number.
But Redknapp seems confused that the 27-year-old could fail a medical.
He's quoted, saying: “He had a stringent one here, one at Marseille and at Newcastle and with France before the World Cup. You couldn’t meet a fitter lad.
“It can’t be a medical. There must be other reasons. It’s not possible – it doesn’t make any sense. There must be another reason.
“There must have been a breakdown or they [Liverpool] changed their minds or moved in a different direction. Talk of the medical doesn’t make sense to me.
“I’m disappointed for the boy and sorry the move didn’t happen, but from a selfish point of view I’ve got a great player.”
It now leaves Liverpool a striker light as they look to add to their side ahead of the new season and Remy returns to Loftus Road unless another club comes in for him before the deadline.
The Frenchman's goalscoring record in the Premier League will be one of the aspects that attracted Liverpool enough to show interest in him, as he averages a goal in every two games.
Remy had previously failed a medical at Marseille where a heart defect was discovered but still moved to the club from Nice. Liverpool haven't commented on the reasons behind the deal falling through.