Caretaker boss Andy King said he was hardly the best person to give advice to the new boss following their 3-1 to loss Chesterfield.
Gary Roberts and substitute Armand Gnanduillet hit the second half goals as promotion-chasing Chesterfield came from behind to beat the Cobblers at Sixfields to leave King's side six points adrift.
Darren Carter gave the basement boys the first-half lead from the penalty spot after goalkeeper Thomas Lee hauled down Hallam Hope. But Chesterfield equalised through Dan Gardner before the break and after the restart Roberts notched his seventh league of the season before Gnanduillet added a third late on.
King said: "I've enjoyed being in charge for the short time I have and I wish the new man all the best when he takes over and I understand that will happen on Monday.
"I'm not in a position to give advice to the incoming manager after losing again, except they need to go on an unbeaten run if they are to get out of trouble.
"I know that this squad is good enough to get out of this position but the only way confidence will improve is if they going on a bit of a run, over four or five games."
Looking back on Saturday's third defeat which left Cobblers rooted to the bottom of the table, King added:
"Any game you lose is disappointing but even more so with the position we are in. We got ourselves in front but then let them back into it with a schoolboy error.
"I told the players at half time that I felt some of them weren't doing it for us but there still wasn't much to choose between the two sides. Chesterfield only looked occasionally like a side in second place and we did very well against them at times.
"I asked the referee about the penalty and should their keeper have been sent off? But he said our player was going away from goal so he didn't see it as a sending off offence. It's just one of those things that happen when you are struggling, they happen when you're in this position."