Brighton have made a third bid for Reading's Liam Moore, believed to involve an increased up-front payment of £8m, according to Sky Sports News
Reading would receive a series of add-on payments throughout the duration of the former Leicester defender's contract.
Moore, 25, has three years left to run of his current deal at the Madejski Stadium.
He joined the Royals from Leicester in the summer of 2016 and was part of the side who lost the Championship play-off final against Huddersfield at the end of that season.
The 2017-18 campaign was less successful for Reading, as they only avoided relegation on the final day, but Moore managed to play in every minute of every league game.