Cobblers caretaker boss Dean Austin has confirmed that loan trio Gboly Ariyibi, Boris Mathis and Hildeberto Pereira have returned to their parent clubs.
Winger Ariyibi picked up an injury and has returned to Nottingham Forest.
Austin has taken the decision to send striker Mathis back to Everton.
And Pereira has gone back to Legia Warsaw, with that decision made before manager Jimmy Floyd Hasselbaink was sacked on Monday evening.
"Gboly has picked up an injury." Austin said.
"Jimmy had already made a decision about Hildeberto and I made the decision about Boris.
"You have to make decisions as a manager that you think are going to help the group.
"I need people around who want to play for this football club, players that will give their heart and soul and every last drop of sweat and blood for this team and do what they've got to do to get the results we strive for.
"I felt it was best at this moment in time with only five games to go that the core of the group are already signed here. I don't want to be working with 23-24 players every day.
"We will demand of the players involved and we know we will receive their total commitment in these final five games."