Can't believe we're still discussing this, ancoats was right on page 3
Lino was behind play but only about 8 yards off the line, problem was he was on the other side of the pitch and he was running to try and keep up as well. Can't blame his positioning given the speed of sterling
One of the most important things to remember in the laws of the game is the phrase "if, in the opinion of the referee" which covers signals given to him by the linesman.
If sterling had kicked a photographer's camera out of his hand before connecting with the ball cos he was so far over the line it wouldn't matter one bit, in the ref's opinion it wasn't out as explained by ancoats above, that's all that matters.
And yes he failed to see that the tackle on aguero before their first was not clean, but if he's not 100% he can't give a foul. He reffed the game well even if he was a little soft on some of the challenges, but i think it suited is more that Everton didn't have to hold back.