England boss Gareth Southgate has opened up on the possibility of a formation change for Monday night's crucial qualifier against Bulgaria.

A win on Monday and Kosovo failing to beat Montenegro would see the Three Lions qualify for the Championships with two games to spare.

The shock defeat to the Czech Republic on Friday night was England's first in a qualifying campaign in 10 years, bringing a 43 game winning streak to an end.

The Three Lions can rectify what went wrong against the Czechs with a stronger performance in Sofia and a change in formation is certainly something that has crossed Southgate's mind.

Southgate is confident his side will bounce back against Bulgaria

"I think we are in a difficult situation in terms of the players that have played international football with us in that area of the pitch [defence] and who are playing regularly with their clubs," he said on Sunday.

"So, that’s part of the reason we didn’t do that [switch to a three-man back line against the Czechs].

"It’s certainly something we’ve considered and I don’t think we can dismiss. I’m not sure, ahead of Monday, if that’s the right thing to do but we’re very aware and assessing those things."

England train ahead of their match against Bulgaria

Southgate was also confident his side would bounce back from defeat and get their qualification for next year's Euros back on track.

"We have a very honest group and are very self-reflective. They don't need me to tell them when they haven't played at the level they can," he told Sky Sports News.

"The key is always to recover from the result. We have to move forward and focus on tomorrow.

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"I don't think defeats harm teams if the reaction is good. Then what you learn from defeats and the resilience from defeats are important parts of a player's career.

"I have always maintained that we have to qualify, and we haven't secured that qualification yet and our focus tomorrow is to get the performance and result."