The Tangerines host Neil Lennon's side in Sunday's televised encounter looking to bow out on a high after the disappointment of missing out on a European slot.
And McNamara wants them to give it one last big push in front of their own fans as they bid to pick up the three points in their final-day clash.
McNamara said: "We want to go for the three points.
"We're at home and we'll give it everything to try and get the victory we want to round off the season.
"I've told the players to go and enjoy it as it's the last game of the season and there's no real pressure as such.
"It's obviously still a big ask.
"We've got a lot of players still missing especially in defence which will make it tough.
"But we want to go for it all the same and have nothing to lose.
"We know on our day we can match anyone so hopefully the lads can do that again."
- Sports & Recreation
- Neil Lennon