Wilshere, 18, was an unused substitute on Friday night when Daniel Sturridge's winner in Portugal kept England on course for the play-offs.
Wilshere had been arrested following an early-morning fracas in Kensington and was omitted because Pearce felt he had 'taken his eye off the ball'.
Getting to grips: Jack Wilshere is refocusing, says Stuart Pearce
England (4-1-2-1-2): Fielding; Walker, Mancienne, Smalling,Bertrand; Jones; Cleverley, Henderson; Wilshere; Welbeck, Sturridge.
TV: ESPN from 3.30pm (kick-off4.0pm).
That is no longer the case ahead of the game against Lithuania, which England must win, although victory will be no guarantee of progression as one of four group runners-up.
'I have seen a touch more focus,' said Pearce of Wilshere. 'Going into the Portugal game, he was swapping phone calls with his agent and one or two other people in regards to newspaper articles. Since then, we think his focus has been much better.
'It is difficult for a young man but the team is much more important than the individual.'
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