Chairman Andy Pilley has hailed the excellent work of head coach John Sheridan since his appointment in February.
In his ten games in charge, Sheridan has overseen five victories, three draws and just two defeats, picking up 18 points and keeping six clean sheets in the process.
The Cod Army have climbed out of the bottom four, and have a chance of finishing in the top half of Sky Bet League One ahead of the final three games of the season against Wigan Athletic, Peterborough United and Walsall.
Pilley said: “We knew when we appointed John that he would have an instant impact and that has certainly been the case.
“He was the right character to lift the football club and he’s seen us climb up the table and hopefully this weekend our safety in League One can be confirmed.”
When the 53-year-old does leave Highbury this summer, he will do so with the best wishes of the football club.
“The deal suited both of us at the time. John will leave us in a strong position having recovered from a difficult spell, and I’ve no doubt he will have clubs banging down his door to hire his expertise," Pilley added.
“John is somebody who we all have major respect for and I would never rule out working with him again in the future.”