Yes, Virgil van Dijk's injury does seem to be quite serious; however, since his earlier injury - the one occasioned by that appalling, reckless, and dangerous tackle by Pickford - I don't think that VVD has ever been quite the same player, and was never quite as effective in his specific role, where he had been magisterial, commanding, controlling; I would go so far as to argue that it is possible that his earlier injury cost Liverpool - or, at the very least, had a major impact on - Liverpool's campaign to retain their title.Seems Mudryk might be heading to Chelsea since Shaktar want every last penny for him. And Chelsea, as always, are willing to pay mug money.
Also VVD's injury is looking like a bad one.
Re Mudryk, Arsenal have increased their opening bid, and have since submitted a second bid; I imagine that they will have to submit a third - and possibly fourth - bid. This - bidding war (which can only suit Shaktar) may run until the close of the transfer window.
Ordinarily, I would concede that Chelsea have access to greater resources, and thus, would expect that they could win this battle for the player's signature, bu tMudryk has made his own wishes known, and his clear preference for Arsenal as his preferred destination should not be discounted in any bidding war, or subsequent negotiations.