Well, for me he's not on the same level as Sanchez – unfortunately there are simply no Sanchez quality players that are available and affordable to us. By all accounts our top targets in this position have been Brandt and Pulisic – both also not at the Sanchez level, but with potential to some day get there. Both of those players don't want to leave Germany at the moment (although let's see if Pulisic changes his mind after Tuchel's firing) and Salah is apparently the next name of the list identified by Klopp and the scouting team.
So what kind of player is he? In short I could say he's a pest – lots of energy coupled with speed and guile means uncomfortable evening for many an opposition full-back. Just the threat of his runs in behind will force the opposition to adjust their tactics and when he does break away, he usually can find a sharp finish or a pass. He is genuinely two-footed and he's played on the left and even in the middle (as a secondary striker or even a centre-forward) for Roma and Basel, but he does seem more comfortable on the right. He ticks all the boxes – speed, energy, dribbling, goal-scoring, tactical awareness; however I don't think he's a complete player who will solve all of our problems on his own. I think, however, that he's the best, most proven and versatile winger that we've been linked with as we've searched for a "Mane clone" and I don't see why he wouldn't meet those expectations.