PHIL Brown feels England’s mentality will be key in tonight’s eagerly-anticipated clash at Wembley.

The two rivals will go head to head in group stages of the European Championship this evening.

And Southend United boss Brown insists it will be far from a walkover for the Three Lions.

“I think this game could be a shock to our system,” said Brown.

“The Scottish rough and ready mentality might upset a couple of the English players.

“I hope it doesn’t upset them enough to put them off their game entirely because I think we’ve got too much quality for them.

“But if we go in with the wrong mentality and think it’s going to a walk in the park that would be dangerous because I think this will be our toughest game in the group.”

England started their Euro campaign with a 1-0 win against Croatia on Sunday, And Brown would be more than happy for a repeat score-line tonight as Scotland aim to bounce back from their 2-0 defeat against the Czech Republic.

“Would I take a 1-0 again ? Absolutely but I think there will be goals in it for both sides,” said the Shrimpers chief.

“The Scots have admitted they got it wrong in the first game in terms of team selection.

“But team selection and systems go out the window in many ways when it’s England against Scotland.

“It’s all about the mentality.

“The Scottish mentality will be right and the England mentality has to be bob on.

“If it is bob on then we will win the game but I think it’s going to be a fantastic match.”

Brown will again be watching on this evening.

And the 62-year-old has been enjoying the early stages of the competition.

“I’ve really enjoyed the Euro’s so far and I think it’s shown how much the modern game has moved on in terms of a spectacle,” said Brown.

“It’s been quality from top to bottom and the football has been excellent.

“I’ve been impressed by the Italians and the mentality of their manager (Roberto) Mancini.

“He was at Man City when I was at Hull City so I’ve locked horns with him a couple of times in the Premier League.

“But the Italians are a polished machine now and I think they’re fantastic.”

However, Mancini is not the only manager Brown has faced during his managerial career.

“Gareth Southgate was Middlesbrough manager when I was Hull City manager,” said Brown.

They got relegated and we stayed in the Premier League.

“I think he went to the FA shortly after that and didn’t go back into football until England.”

Southgate’s 26 man squad all trained fully yesterday with Manchester United defender Harry Maguire included as he looks to prove his fitness and push for a start following a recent ankle injury.