Been saying it for a while. Both Atlético and Simeone need new ideas
I was thinking about that couple of years ago, but he has been able to keep them competitive for some time now even when everyone expects them to fall to mediocrity again
You also have to remember the struggles both had before they matched. Simeone had a mixed career although with some success before Atletico, while the club always struggled to find the right manager.
The grass isn't always greener on the other side, they both risk a lot of they moved on actually and could end up badly tbh.
Also, for Simeone there isn't many suitors out there?
Only PSG & Bayern can afford him in Germany or France, both teams aren't good fit for him as he is more suited for underdog type of club.
He won't join another Spanish club and in Italy he already said Inter will be the club he will manage their, but their team is awful and they don't have what it takes to make themselves appealing to him right now.
That leaves EPL, Liverpool has their manager likely for few more years, same with City (and can't see them taking Simeone right after Pep) , Chelsea is perfect fit but right now they are mess with the situation with ownership and allergy to coaching stability. Arsenal aren't going to invest like Atletico nowadays sadly. That leaves only Manu as a good destination for him to leave for another team.
Don't know, but I think there isn't a situation out there worth breaking the stable relation with Atletico