2y extra shouldn't hurt him. He can do his thing and already ride the Tour (which would be hard in a top team). Yes IF he keeps progressing and shows he can actually aim for a top 3 or so in a GT Lotto simply doesn't have the money to support him. Mainly because they can't pay for GT standard doms for him and their TT setup will probably never be on par with that of UAE for example. But as long as he isn't at that level your team doesn't have to carry the race. It's not like he's gonna be in a leader jersey after a TT like Remco.
We still have to see if he can ever get to that level (I have some doubts), for now going to one of the superteams would just mean getting some chances in races like UAE Tour, but probably be a domestique in a lot of the big races. Or it has to be Trek or Ineos maybe.
Anyways, Lotto was close to extending him. There have been talks for a few months now. No agreement yet, but it was going in the right direction. But that was before UAE Tour ofcourse, he will be able to ask for more money now and he will be getting better offers.
His own words about it tho:
"I'm not really thinking about it. I'm super happy at the team right now, I get a lot of chances. So for me this can take a while longer" (last sentence is a literal translation, he basically is saying he's fine with staying for now).
Anyways we'll see. I've always said it. If you're a actual GC prospect with GT ambitions I understand why you would leave a team like Lotto (even tho I don't think it's good for the sport at all), it's a completely different story to De Lie, Vermeersch or Van Gils (who hasn''t made up his mind).
EDIT: for the Dutch speaking people:
Lennert Van Eetvelt (22) heeft vorig weekend indruk gemaakt met eindwinst in de UAE Tour, een rittenkoers op het hoogste niveau. In onze dagelijkse podcast Sporza Daily kaarten we met de renner zelf na over de knappe prestatie. Lang niet zijn laatste als het aan hem ligt.
sporza.be
Here is the podcast where Lennert himself, his team manager Van de Wouwer and also José De Cauwer talk about his UAE win. With the last 1'30 or so about his expriring contract.