West Ham will do everything in their power to keep hold of their fan favourite defender, but growing interest could make it very difficult to retain him.
The Hammers' relegation was always going to lead to sales, and several of their top players have already left the club.
A defender who has made himself a cult hero over the last 12 months is the next player on the chopping block, according to a report.
Konsantinos Mavropanos, a 28-year-old defender, was a key figure in the Hammers' campaign, despite their relegation.
His efforts have not gone unnoticed, with other teams across Europe expressing interest in signing him.
West Ham are determined to keep hold of Mavropanos, but it is judged to be a challenging task given the level of interest from Premier League and Bundesliga teams.
The defender's experience and strength would be crucial to any effort to return to the top flight next season.
The next few weeks will be crucial in persuading Mavropanos to stay at the club.
Meanwhile, Arsenal are targeting Christos Tzolis, who is available at a reasonable price for a player of his talent.
Everton, on the other hand, are struggling to put together an offer to re-sign Jack Grealish, who impressed in the first half of last season.
