The Whites chief executive also issued updates on fellow youngsters Alex Mowatt and Lewie Coyle.
Leeds United's Charlie Taylor
Taylor's existing deal expires in 2017, prompting fears he could follow Sam Byram and Lewis Cook, who found themselves in similar predicaments, out of Elland Road in the near future.
A number of Premier League clubs are said to be keen on the Whites academy graduate, however, chairman Massimo Cellino this month insisted he would not be allowed to leave in a scathing attack documented by the Daily Mirror.
Whites owner Massimo Cellino
Taylor isn't the only young prospect soon to be out of contract, however, with Alex Mowatt and Lewie Coyle also in their final years.
And, discussing possible renewals, Mansford told BBC West Yorkshire Sport: "We're engaged with Alex and his representatives, and the same with Charlie - though some of that is from before my time at the club so it's a little bit difficult for me to answer.
"I think it's right to say that at this moment in time Charlie doesn't want to extend his current deal with us - I think that's a fair and honest report as to where it's at.
"I don't want to get drawn too much more into Charlie. I think Alex and Lewie Coyle are ones that we're engaged with and will seek to extend."
Midfielder Alex Mowatt
Were any of the above to see out the final year of their contracts, they are extremely unlikely to leave Leeds for nothing.
Provided the trio are offered deals which either match or improve upon their existing ones, the Whites are guaranteed compensation if they move to fellow English clubs.
And as with standard transfers, buyers would still have to strike a deal with Leeds first, or face a tribunal hearing to determine the fee paid.