People are so obsessed with pace
The fact is, if we play a front three of Martial, Lukaku and Rashford, I think we have the fastest trio in the league. Rashford is at least as fast as Salah (overrated in terms of downright speed, outpaced by Van Anholdt), Martial is faster than Mane (who looks to have lost a yard) and Lukaku is a lot faster than Firmino. It's probably about the same for City, though Sane might be a tad quicker than Martial - though he's been outpaced by a 30 something Valencia a few times.
Lukaku is perfect for a counter attacking team as no defender will catch him at full pelt - remember that run against Chelsea in the 90th minute? Martial and Rashford would then provide the speed and dribbling on the wings. However, for some reason, our players just stop working when played on the right. It makes no sense. Rashford, for instance, has bags of speed, can dribble, is decent with both feet and actually has a very good cross on him - sounds perfect for the right wing, right?
We have plenty of fast players. Put all players together, I would argue we are one of the fastest. Our fullbacks are plenty fast; our centre backs with Smalling and Bailly are rapid. Our midfield with Pogba and Fred are quick. Only slow player out there is Matic. The problem is the way we play. Scholes and Carrick were slow, but they made us play quick football. Pogba can run faster, but he always takes extra touches compared to say Carrick. That is our biggest problem, imo - our somewhat lethargic approach to moving the ball around, not the actual running.