- Edited
I can't believe people would turn down Isak and Wirtz in place of Gabriel. The Brazilian has been immense for us over the years but he isn't crucial to our build up play (those sort of defenders are harder to replace IMO). I think everyone acknowledges having a striker like Havertz improves us defensively but I don't think enough credit is given to the importance of defenders to the attack. Liverpool are a better attacking team than us in part because they have defenders like Trent and Van Dijk who regularly ping passes that bypass the midfielders into the final 3rd. They generate a lot of high quality chances as a result.
Stylistically Tomiyasu is the closest to Gabriel in our squad and without the ball, he's probably as good as anyone we have got but he's always injured (maybe the surgery will now resolve the issues with his knee?). There are trade offs with the other options we have: Calafiori would improve us offensively but will leave us weaker defensively. Timber is better than Gabriel under pressure which is great against high pressing teams and is at least as good 1 v 1 but we'll be weaker in the air. I must add though we nearly won the league with Toure-Gallas, so Saliba-Timber could do just fine. And of course we can also go out and sign a new defender.
To be clear, I wouldn't sell Gabriel if we were just offered cash and there are no guarantees we'll get Wirtz and Isak. The money would look good on the balance sheet but trophies are won the pitch. However if I was Mikel, and was offered such a deal, I'd take it and set the team up differently. I'd go 3 at the back and play both saka and Wirtz as inside forwards. Atlanta and Leverkusen has shown you can still have an effective high press with 3 at the back.
-------------------Isak
-----------Wirtz-----------Saka--------
MLK---------Rice-------Ode-------White
---------Cala-----Saliba----Timber------
------------------Raya
I believe Saka could even be more productive in an inside forward role, closer to goal. He is not like Salah who starts out wide and makes frequent runs in behind. With his current role, he always has so much to do even after skinning 1 or 2 players, that wouldn't be the case if he playing closer to goal in an inside forward role. His numbers could explode IMO.
Havertz are Nwaneri are also probably best off the main striker and they would be high quality options off the bench.