The Sky Blues, who remain in administration, decided to leave the Ricoh Arena after a lengthy rent row with management company ACL, who owns the ground.
And last month the Football League approved the application by Otium Entertainment Group, the administrator's preferred bidder for the Sky Bet League One outfit, for their home matches to take place 34 miles and 39 minutes away at Sixfields Stadium.
That decision has left the ACL, who reportedly offered Coventry a 10-year deal to play at the 30,000-seater stadium at a greatly reduced rent of £150,000 per year earlier this week, unhappy.
An ACL spokesman said: "It is clear that the Football League has breached its own regulations in making the deeply unpopular decision to allow the Sisu-related company Otium to make a ground-sharing arrangement with Northampton.
"There is no justification to take the Sky Blues out of Coventry, and the Football League clearly have not considered the matter fully - or else they would not have arrived at this decision.
"ACL remains committed to keeping the Sky Blues in Coventry and will pursue all avenues available to us to do so."
Tuesday's creditors' meeting was adjourned until next week at the request of ACL.
- Sports & Recreation
- Football League
- Sky Blues