Sam Allardyce insists there is "no point being bitter" as he comes to terms with his departure from Newcastle United.

Less than 24 hours after leaving the club by mutual consent the 53-year-old vowed to return to football, although he admitted it had come as a disappointment. "Once people make a decision, there is nothing you can do about it," Allardyce said. "There is no point being bitter and twisted about it because that will only affect you, it does not affect the people you have left. For me, it's disappointing and you have to move on with your life."

"I will take a break with my wife and go away, have a little bit of a recharge of the batteries, come back and then move on with my football career. When that will come? Who knows? We will just have to wait and see."

Reports have suggested Allardyce's departure came just hours after a meeting with Mike Ashley, the club owner, to discuss possible transfer activity in the current window. Paul Kemsley, the former Tottenham Hotspur vice-chairman and close friend of Ashley, said Allardyce was not trusted to bring in the players who could turn around Newcastle's flagging season.

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"People have got realise that Sam Allardyce was not Mike's choice. Mike bought the club with him already employed," Kemsley said. Mike took the view that he is in the job, let's see if he can deliver what I want, which is good-quality, attacking football and to win games. I'll give him time to see if he can deliver that.

"Mike has put £250 million into the club and is about to invest more, no doubt, in the window, and I suspect he wants to invest that in his own man and his own team."

Ashley has been widely criticised for the timing of Allardyce's exit, but Kemsley insists there is no way he would have rushed a decision purely because of supporter unrest. "Mike's a very considered guy," Kemsley said. "[Running Newcastle] is certainly costing a lot more initially than he thought it would. He, along with everybody else at Newcastle, wants to see good-quality football, they want to win, and he's a winner.

"It's a difficult decision whenever you get rid of a manager and there are always a thousand opinions. But he thought about it and decided it was in the best interests of the football club.

"I know Mike well enough to know that he doesn't make decisions rashly. He will know where he's going, he will stick to his plans and deliver what he believes will please the Newcastle fans. If you give him time, he will deliver exactly what the Newcastle fans want. I'm sure he's got a plan."

Allardyce revealed he had been inundated with calls and texts from friends offering their support since last night's announcement. One text came from Harry Redknapp, the Portsmouth manager, who is an early favourite to replace him at St James' Park.