The Spaniard has been heavily linked with the vacancy at Everton and the Latics' relegation on Tuesday only heightened speculation that Martinez's four years in the DW Stadium hotseat may be up.
The Wigan manager said: "One thing that we're going to do very quickly is understand where we are next season and what we have to do internally."
With the high of Wigan's surprise FA Cup triumph last Saturday followed only three days later by the low of defeat by Arsenal to seal their fate, Martinez insists he has not yet thought about where his future lies.
He will meet with chairman Dave Whelan on Monday and Martinez, a former Latics player, knows it is important the man in charge next season has as much time as possible to prepare for life in the npower Championship.
He said: "I know it can sound a bit stupid but I've never, ever thought about my situation yet. It's important you get through those feelings. We had the opportunity to do that with the players over the last two days and now we're just focusing on Sunday.
"We really want to enjoy our time, as a football club it's a big day. After that we'll have enough time to look at individuals and see how we feel. It's going to be very straightforward and, whatever it is, it's going to be good for Wigan.
"Whoever is the manager at the football club will be ready and already thinking about the next campaign and make sure we're ready to start in the Championship and not starting the campaign still feeling hurt.
"This football club has got incredible, solid foundations and whoever is going to be the manager is going to have a very successful time.
"I know I'm not going to be here until I'm 100, there will be one day I can't be the manager. That's something that's normal but I've always said I'm honoured and privileged to be the manager and I'll enjoy it until that's the end of it."