Pellegrini gets a bad rap here but for stability and going for trophies he isn't a particularly bad option.
You forget that at both City and Madrid he's worked with a club where he doesn't have a particular say in transfers.
In his first season's at Madrid they got their highest ever points.
In his first season at City he won the league.
In his first season at Malaga he qualified them for the Cl. Who did he bring into Malaga in his first season? 2 players that still start for us- Cazorla and Monreal.
I'm not saying he's perfect. He's not the best tactically.
BUT he's a good option.
Unfortunately we give Wenger so much power that he can choose to leave when he wants and that particular moment might not be the best period as far as alternatives are concerned.
About 6 months ago every single one of the managers on the title of the thread was available. In one year IF that is when Wenger leaves all of them would be just finishing their first year's at their respective clubs. 2 of them at rival PL clubs.