On the other hand, England have plenty to play for as they know that they virtually have to win to top the group and guarantee automatic qualification to Brazil, with second-placed Ukraine facing minnows San Marino.
Thousands of Polish fans are still expected at Wembley and Borussia Dortmund frontman Lewandowski believes that they should have fun.
He told reporters: "We know we have a lot of fans out there who will come to the game.
"We don't stand a chance of going through, but we want to go to Wembley and at least allow our supporters a little fun. For sure we won't be favourites."
Lewandowski will switch clubs at the end of the current season after announcing that he will sign a pre-contract with European champions Bayern Munich in January.