Tottenham’s wage structure is leaving them vulnerable, with Kieron Dyer revealing that he earned more in 2002 than a current international star.
Spurs have been able to piece together a squad capable of competing with the Premier League elite, with title challenges mounted in each of the last two seasons.
They have also been able to tie key men to fresh terms on a regular basis, with those working under Mauricio Pochettino buying into the long-term project in north London.
There is, however, a strict budget in place and Kyle Walker has already left for Manchester City while Danny Rose continues to be heavily linked with Manchester United.
Harry Kane’s exploits have also seen him spark transfer talk, and former England star Dyer feels there will be further exits unless Spurs start to match the financial rewards on offer elsewhere.
He told Radio 5 Live : "I spoke to a Tottenham player towards the end of last season. He's a full international, regular for his country and regular for his team.
“He told me what he was on wages wise and I was on more money than him at Newcastle in 2002.
“This is a player now at Tottenham, who came second in the league, who is a full international in 2017 and he isn't on what I was on at Newcastle in 2002.
"It's a massive problem."
England star Kane and Spurs captain Hugo Lloris are reported to be the top earners within Pochettino’s squad.
There are, however, plenty of other international stars within the ranks that Tottenham will need to keep happy on and off the field if the club are to build on the progress made over recent years and challenge for top honours.