At this point, Kimi is probably worth around 60 million. I would hope that the amount he's paid wouldn't be the primary deciding factor in where he'll go. Schumacher was earning 40 million/yr at Ferrari when he was on top.Alonso and Hamilton make 20m Euros and Lotus pays Kimi 3m. Lotus has also been slow to pay him.
Look, F-1 fans root either for the driver, the constructor, or in some cases, both. I remember worrying about the Type 72 as teething and reliability troubles plagued Chapman, and rooting for Emerson Fittipaldi, as the 72 was a ground-breaking car for its time. I also recall the classic pairing of Peterson and Andretti....Peterson was a joy to watch, especially in the wet, with car control that rivaled Gilles Villeneuve...sideways through St. Devote going up the hill at Monaco was simply amazing. But those days are gone. Unfortunately.
All that is to say that the Lotus is a Renault, if you go by the engine. The chassis is not from the geniuses at Hethel.
On the other hand, Kimi is his own "brand," and is a pure joy to watch when the car is working properly, whether it is a "Lotus," a "Red Bull" Renault, or even one of those red cars. The car dances in his hands, and for an F-1 fan, that is magic.
If he goes to Fiorano, stays at Lotus, or goes to RB to work with Newey, so be it. We all have the great privilege of watching a terrific talent alongside of Alonso, Hamilton, Button, and even that German guy.....whose name escapes me for the moment.