Indeed, Redknapp was discussing his time at QPR and says he is surprised by those big clubs who didn't go for the now Tottenham youngster.
Alli has since moved to White Hart Lane and absolutely thrived in the Premier League.
Redknapp told JOE: "Kevin Hitchcock, my goalkeeping coach at QPR, his boy was at MK Dons so he used to go and watch them play at every opportunity and he just said he's the best talent I've seen in years.
"It would be interesting to see some of the scouts' reports who went and watched him and for the clubs who didn't sign him - you'd like to know what they couldn't see in him, because you look at him and he's just scoring goals, making goals, he's done everything."
Naturally, Redknapp's comments highlight the fact he himself didn't listen to his goalkeeping coach at QPR...
But maybe the former Spurs boss never thought the west London side could attract the 19-year-old, considering the attention that was bound to be shown towards him later down the line.
Every decision Alli has made so far looks to be the correct one. Which is the exact same sentiment that applies to Tottenham in signing the teenager.
QPR, though, continue to languish in midtable in the Championship.