Highly-rated Atletico Madrid midfielder Saul Niguez has signed a new five-year contract.
Huddersfield will offer new contracts to Ishmael Miller and Oscar Gobern.
Fulham appear to be closing in on the signing of Bakary Sako after Wolves manager Kenny Jackett admitted negotiations between the two clubs were ongoing.
Sako was signed by Wolves last summer as they looked to build a team to take them straight back into the Premier League.
But, following a dismal campaign, they were relegated to npower League One and Jackett has since been appointed as the man to stop the rot.
Now former France Under-21 international Sako, who impressed during tough times at Molineux last year, has expressed his desire to move to the Premier League and ex-Millwall boss Jackett confirmed to the Birmingham Mail that the Cottagers are the favourites to land the 25-year-old.
"Fulham are genuinely interested in Sako and now it is about negotiations between the two clubs," he said.
"As far as I know no fee has been agreed yet, but they are in negotiations. I don't know if it is close. The offer's at a very high level, whether it is at a point where the powers that be at Wolves want to accept that or not is another matter.
"He's not one I thought would necessarily be with us in League One at the start."