Ken Bates said on Yorkshire Radio: "Dennis targeted six players for new contracts and he works on the principle that if they are worth it you offer them a new contract before they ask.
"Tresor was the last and now we've got the boys lined up where he wants them with something that is fair to them and affordable to us.
"It's encouraging for the youngsters that they are being rewarded for their progress and hopefully it will encourage them to do even better."