Sterling is so frustrating to watch, he makes some good runs, gets in some great positions but his assist and goal return is poor, and that's what he's in the team for.
Think its strange that Southgate is playing Stirling and Alli in opposite positions they play for their clubs (Stirling plays on the left of a midfield 3 and Alli as a number 10) and both have not been at their best.
We've done better than most expected during this tournament but Shirley if there's a way of possibly improving the team/performance (either swapping Alli and Stirling positionally or bringing Rashford in) its worth trying.
As Detrius says, I fear that at some point Sterlings lack composure, touch and creativity or not taking his chances will cost England.
One goal in 37 games in an England shirt, for an attacking midfielder is not good enough IMO, that's not just based on his performances in this WC.
Yes we're doing well with him in the team, the question is could we do even better and have a better cutting edge and a bigger goal threat with someone else.