Negotiations will also take into account players’ contracts at clubs, as some enter the final few months of their current deals.
That may allow clubs to sign players for a reduced fee, while some will be trying to agree new deals rather than losing assets on a free transfer.
According to Transfermarkt, here are the most valuable Championship players who are in the final year of their contracts.
It should be noted that some clubs have options to extend player's contracts - often by a further year.
9. (17th) Curtis Nelson (Cardiff)
Now 29, Nelson has made over 100 appearances for Cardiff and is coming to the end of his two-year contract extension. Photo: Cameron Smith
10. (16th) Ben Wiles (Rotherham) - Club option to extend
After coming through the ranks at Rotherham, the midfielder is coming to the end of a three-year deal, yet there is a club option of a further year. Photo: Mike Hewitt
11. (14th) Kieran Dowell (Norwich)
The midfielder has made 66 appearances for Norwich since joining the club in 2020 but has only started seven league games this season. Dowel, 25, is nearing the end of a three-year deal with The Canaries. Photo: Getty Images
12. (13th) Jay Dasilva (Bristol City)
Bristol City’s first-choice left wing-back is one of several Robins players who are nearing the end of their contracts. Photo: Catherine Ivill