Fabian Ruiz (CM) - I think he'll fit Ole's system well from 4-2-3-1 to 4-3-3 and compliment Pogba well because of his passing abilities. He has a great technical ability and is able to play accurate passes even under pressure and not only keeps it so simple but his ability to play through ball in for forwards are a real threat which will enable us to create chances, he'll increase AWB's offensively because of his through ball which can create a space for AWB to cross, low cross or cutback pass. His key assist is pretty high compared to most CM and has good high work-rate movement off the ball where he can move intelligently which will open space to exploit. He has very good defensive work rate where he can read the game so well and intercept the ball before he could launch a counter-attack with his dribbling and passing.
Julian Weigl (CDM) - Unlike Mctominay and Matic, he is key to play out from the back under high pressure and make himself available for a pass as always, his asset to play as CB during the game could allow us to play 3 at back with fullback bombing up high. He is also good in possession. By no means is he a playmaker but he is great passer of the ball which is his strongest key, especially with his proving both long and short distances as well as creativity in the final third and switch the play with a raking cross-field pass to a teammate on the left or right flank. Like Ruiz, Wegi will make alway make himself available for a pass or could move intelligently which will open space to exploit and keep the tempo of the game faster with his one-touch play, switching the play with his long pass which can be real asset to us when we overload on left flank which will create huge space for on right flank to exploit through his one touch to play cross-field. He has improved his defensive skills especially with his arieal battle and is much better at it right now and looked stronger than before in 17/18.
These two midfielders could take most of our burden off Pogba's creative and long passing, it gets to the point we don't have to worry about Pogba if he's marked because most of the time they can do what Pogba would do. With Fabian Ruiz and Weigl penetrating midfield and control the midfield could allow Pogba to make a powerful run whenever he has space to run which will be a real threat.
Pogba is being to asked to collect balls and being deep of midfield to play pass around CB and lose ball couple of time under high pressure, same applied to Matic. Weigl could do that as he excelled so well under high pressure when he collects the ball from defenders and broke the line with his passing. Pogba is being asked to play cross-field to both flanks which will force his positioning to be deeper to do that meaning his offensive would drop. Weigl and Fabian Ruiz could do that job without forcing Pogba to move down or play cross-field. Fabian Ruiz poses great ability movement off the ball where he can move intelligently and play in between the lines but unlike Lingard, Fabian is more threatening because of his playmaking and through ball which will cause havoc than Lingard would. Pogba is being to asked do everything we want from him when Ruiz and Wegil could do that and they always offer an option for a pass and keep it so simple until there's an opportunity to exploit
If they mark Pogba, they'll have to mark Ruiz too which will be more difficult. If we are playing counter-attacking against top sides, they'll have to stop our midfield from playing when we could posse greater offensively of long passing with Pogba, Weigl and Fabian Ruiz. Like against Liverpool for an example, they'll have to sacrifice their fullback's creativity which is is very important to Liverpool's buildup and attack otherwise they may get destroyed. if they sacrifice their fullback's creativity, they'll be toothless in attack. Not only Liverpool but if Arsenal, Chelsea, and Spurs knew that, they will not play their fullback high which will make it easier for our fullback to deal with one on one rather than 1v2 while we can push fullback high as long as Weigl stays as 3rd option for CB in middle at back, they'll have to ask their winger to help out defensively and force them to sit deeper and they are not strong in long passing so it'd be pointless if they can't pass long to attack and mark whoever is great at long passing.
For RW, there are not many great RW and Sancho is one of player I would not consider going for if he plays on RW because I believe he'll be more effective if he was playing on the left flank than on right flank in our system.
There is a couple of great young RW but not much with the end product, for an example, Samuel Chukwueze look so unbelievable, frighteningly fast, world-class dribbling, his close control, and trickery consistently see him outplay multiple defenders before arriving in the box. Unlike Rashford, Lingard, and James, in tight space, Chukwueze has close control to exit the pressure and penetrate the last line of defense. He is also work-rate who support his fullback off the ball and alway press player whenever they have ball.
If Chukwueze improves with his end product and can become more consistent with his final actions, as well as adding another dimension to his profile, he'll be the superstar that could rival the likes of Mbappe in the future. Is it worth risk to gamble on him? It's a question of whether we can take a gamble on him. I'd wait until he improves his end product like 10+ goal in La Liga per season playing for Villarreal. I'd take Sancho if it means we'll play him as left-winger when top right winger becomes available in the market or Greenwood to step up. At the moment, like i said there are still not many great young RW, especially left footed in the market.