I respect how great Bellingham is to Real Madrid recently, he has become a great asset in Spain but we don't know rival teams that they will meet in knockout stage, quarter final and semi finals. Not to forget that some players are bound to injury. Above all, I will love to see Bellingham win this season Champions League, it will bring a trend to search for more English player just the way Haaland change Manchester City winning mentality last season and now.
Jude Bellingham most valuable transfer player above 100 million euro depend on his performance with Real Madrid keep consistency in domestic league and champion league. Recently not injury he still can show the best perform and no doubt for Madrid will automatically qualify to 16 round in Champion League. Depend on finish standings position, in knockout round Real Madrid face weakness or strong opponent team but current performance won 2 of 2 matches seems not difficult for Madrid will settle first standings position above Napoli.
Automatically on knockout round will face teams on other stage who finish on 2nd standings but I don't think Madrid will eliminated early in Champion League depend they are favorite team list for winning UEFA Champion League tittle in this season.