Dallas Cowboys owner and general manager Jerry Jones has refused to discuss the future of head coach Jason Garrett following his side's 37-36 loss to the Green Bay Packers last night.

The Cowboys blew a 23-point lead in the second half of the match, leaving themselves on the verge of missing out on the playoffs for a fourth consecutive season.

Garrett has a 28-26 record during his time in charge of the team, leading to suggestions that the Cowboys' lack of improvement could be his undoing, but Jones has warned against jumping to conclusions about the 47-year-old's future.

"Let me just say this: I'm clear and I don't choose to talk about that or talk about several things about the franchise right now. This is not appropriate to talk about it right now. We've just had a loss," Jones told reporters.

"It is at those particular times that you ask that. Don't in any way interpret in any way my refusal to get involved in that kind of discussion here tonight with anything different about me and Jason's future. That would be a bad mistake to think anything is different."

When pressed on the issue, Jones insisted that he did not need to close the door on the speculation as he believes that he has already done so.

"I don't need a chance. I slammed that door back here, when was it, four weeks ago. That door was slammed. I don't need another chance," he added.

"You all shouldn't ask for one every time you see me under any circumstances, whether we've had a bad practice or whether we've had, as we had today, a real disappointment. That's not accurate, that's not accurate at all."

The Cowboys can still reach the NFL playoffs, but they will need to win their remaining two matches against the Washington Redskins and the Philadelphia Eagles, who currently top the NFC East, to make it to the post-season.