Allardyce wrote in the London Evening Standard: "There has been a fair bit written and discussed about my future at West Ham and the fact I'm in the final year of my contract.
"Does that affect me? The simple answer is 'no' - I can't afford to let it, otherwise I become distracted, which will mean I can't do my job.
"Things are similar to the season before I signed this contract. It was a two-year deal and it ran into the final season before we reached an agreement.
"I had a 10-year contract at Bolton but it didn't stop me leaving when they showed a lack of ambition and didn't want to go where I believed I could take them.
"This club is different. It will be moving into the Olympic Stadium in two seasons' time and the ambition behind that move means the manager has a responsibility to fashion a squad good enough to go there because the demand will be so great.
"As for my relationship with our two chairmen, we've had our differences, there's no doubt about that.
"For me and them, though, the disagreements come to a conclusion, a decision is made whatever it may be and we all wake up the next day and get on with it."
For the big stories and the banter follow us on Twitter: @tribalfootball