The former forward believes Southampton's Ryan Bertrand is ahead of Tottenham Hotspur's Danny Rose.
England manager Roy Hodgson
England met Australia on Friday evening in the second of their warm up games for Euro 2016.
It proved to be another win for them as they secured a 2-1 victory, with Manchester United youngster Marcus Rashford scoring on his debut.
Wayne Rooney celebrates with Jordan Henderson (R) and Marcus Rashford (L) after scoring the second goal for England
He was one of several players in the team looking to impress and secure their place for the tournament before Roy Hodgson names his final 23-man squad at the end of the month.
And reacting on Twitter Collymore says one question about the squad has been answered; that Southampton’s Ryan Bertrand should start ahead of Tottenham Hotspur’s Danny Rose.
1. WR looks sharp— Stan Collymore (@StanCollymore) May 27, 2016
2. Bertrand best LB
3. Rashford/Townsend motivated
4. Wilshere needed 90
5. FD/DD + 1 of MR/DS stay home
England's Fabian Delph and Raheem Sterling during training
Attention now turns to which players Hodgson will leave out of his squad for the tournament.
Manchester City’s Fabian Delph is likely to miss out after picking up an injury, but after him it is hard to name the other two that will be left behind.
Indeed, as Collymore suggests, it may come down to a direct shootout between strikers Daniel Sturridge and Marcus Rashford.
And on current form, it would be the Manchester United youngster that would be on the plane to France.
Marcus Rashford celebrates after scoring the first goal for England