The 21-year-old have been highly impressive in Tottenham’s midfield this season, with him having adapted well to the conversion from playing in defence last term.
Dier's form has seen him called up to the England squad for the first time for the upcoming friendlies with Spain and France, with Roy Hodgson assessing his options ahead of Euro 2016.
Le Tissier, however, feels his inclusion shows the lack of quality the English national side have available to them at present.
"It just goes to show that it doesn't take too much of an upturn in form to get you a place in the squad right now," Le Tissier told Sky Sports.
"If you're an Englishman playing decent football in the Premier League then you've got a chance. Eric Dier has only just started playing in that position so the competition isn't exactly fierce.”
But the Southampton legend does believe Hodgson may look to play Dier alongside Spurs team-mate Dele Alli in the heart of England’s midfield.
The youngster has made a fine start to his Premier League career with Pochettino’s Tottenham side, earning a call-up to the national side in their final two Euro 2016 qualifiers last month.
He has retained that place in the squad this time around, increasing the hype surrounding his potential, and Le Tissier has urged patience with him as he continues to develop.
"Dier has formed a decent partnership and it might be that Roy will take a look at them playing as a pair in central midfield," he added.
"Alli has bundles of potential but you don't want to put too much pressure on the kid. It's a great experience for him and he has all the tools, but we need to be patient."