The Match of the Day host has re-used his Leicester City promise from last season.
England kick off their Euro 2016 campaign on Saturday as they take on Russia in their opening game.
They are expected to comfortably reach the latter stages of the tournament, with some believing that they could even be outside contenders to win the competition.
It would take an impressive run for Roy Hodgson’s side to do that, but the success of Leicester City in the Premier League has made many believe that anything is possible.
Lineker famously claimed that he would present Match of the Day in his underpants if the Foxes would the league last season, and now he has made a similar offer regarding England.
If England win @UEFAEURO I'll do the first game at Euro 2020 in just my undies.....hey it worked for Leicester.— Gary Lineker (@GaryLineker) June 10, 2016
It will certainly be interesting to see how England fare at Euro 2016, with this squad offering big hopes that they can go far.
Much will depend on whether Roy Hodgson can settle on a system that works and Lineker will surely be watching with a keen eye after his latest promise.
Gary Lineker in the stands