Ryan Nelsen believes West Ham have issued a statement of intent by tying Winston Reid to a new deal.
Tottenham are keen for striker Shaquile Coulthirst to continue his development out on loan after his spell at Southend.
Liverpool have opened talks with Sunderland over a £9million deal for Belgian goalkeeper Simon Mignolet, according to reports on Sunday.
It is believed that Mignolet has told Paolo Di Canio he will not sign a new contract at the Stadium of Light and wants to leave in order to boost his 2014 World Cup ambitions.
Liverpool could be in need of a goalkeeper given that speculation continues to link their current number one Jose Reina with Barcelona.
Sunderland, though, will not be keen to sell Mignolet, who was their Player of the Year in the 2012/13 season.
But the 25-year-old, who has also been linked with Arsenal, has only two years remaining on his contract and Sunderland will know his value will decrease as time drags on.
However, the North-East club would still want at least £9m from Liverpool, who have also been linked with Stoke City's Asmir Begovic.