All in all, I think people underestimate how difficult it would be to replace Wijnaldum. Sure you can find a midfielder who works hard and also produces exciting moments from time to time (maybe more regularly than Gini), but you also need to replace:
- Tactical intelligence – Dutch players have a unique advantage here, they have these 4-3-3 possession systems drilled into them from young age: where to move, how to create space for teammates, how to cover for each other's runs, all that stuff. I literally cannot think of a single CM/DM with comparable physical attributes as Gini (winning 60%+ of duels) who is also his equal in terms of understanding of the game.
- Related to p.1 – versatility. We take it for granted with Gini; whatever hole we need to fill in the squad, just stick Gini in there and you know he will do pretty well. DM in place of Fabinho? Sure. 2nd, more advanced CM like Keita? That's his bread and butter. Attacking CM – yes, and he will always score goals when you unburden him from defensive responsibility. Emergency winger, centre-forward, or centre-back – he got it. He can do all this, again, because he understands the game on a high level and knows what each position needs – and also has such a well-rounded technical arsenal that he can pull off each role convincingly enough.
- Related to p.3 – fitness and availability. It's no good being the most versatile player on the planet if you spend more time in the treatment room than on the pitch. Gini is probably our quickest-to-recover player in the squad (alongside Mane and Mo, I guess), he is the one you can count on not to drop the energy levels when playing game after game after game in quick succession. And his injury record has been absolutely stellar, since recovering from that one long-term injury he had back at PSV.
Put this all together with being a great teammate and exemplary professional and it's really hard to think of a potential replacement. If he chooses to leave, the team he goes to will definitely become more consistent and hard to beat as a result. I hope he stays.