How do you drop from a league?

I'd like to drop out of mfn-1 as well

Well, hopefully we will get a response from someone. I'm in two leagues and just want to manage one now.

Me too. It would be fun checking new stuff, just not got the time.

You can't "drop" your team midseason - if you want to leave a league, just don't renew into the next year - but the AI is pretty good about handling abandoned teams without messing up the competitive balance of the league. If you want to be nice you could install a gameplan and make sure your pending free agents are signed, but if you don't the AI will re-sign FA's at the end of the season for any teams whose owners are not coming back and if you haven't made a gameplan yet the AI will do it for you.

It wouldn't be fair on the other players if an owner just 'stopped playing', so I will be out to cause as much of a headache as possible for the season I'm in mfn1.
I would like another team (3 in total) but 1 just isn't for me. I apologise as I'm sure there are other folks who would like to be in mfn-1.

Ok, then why not have a system where if you no longer want to partake in a league, you click a box or something, confirm it.

Could have a list somewhere visible of all teams whose owner is looking to "sell up". Somebody sees I want to drop out of a league, someone else wants the team. They press a button,team ownership gets changed.

You'd need to have some form of validation though - same owner with multiple teams in the same league for example.

Nah, you click that button to take a team on, you make that decision there and then. If you have any indecision, don't do it.
The team I have has been run into the ground and needs rebuilding. I already have one team like that and until I took this one on, just didn't realize how much time and effort it was going to take.
I'll do what I can this season, but all my plans are one & done

Personally I'd actually choose a team in the gutter - first, you have no expectations, and second, when you do finally start to do well it's so much more satisfying.

Kind of did with Jersey. If I didn't have thavt team then I would focus wholly on Zona