However, in an answer to reporters' questions, he refused to rule out the possibility.
Lead singer Paul Weller appeared to rule out a possible reunion earlier this year.
According to Learmount, many aviation experts have yet to rule out the human factor.
However, the club declined to rule out Adams as a possible successor to Pardew.
Train drivers union Aslef, however, said it was impossible to rule out further shortages in future.
This would seem to rule out the whole concept of newsgames as a breach of terms.
This week, the United States for the first time refused to rule out deploying troops.
It certainly does not seem to rule out cautious efforts at reforms to improve the mix.
Earth-based observations might not be sufficient to rule out an impact in 2036.
In fact, Mr Walker, a Republican, wants to rule out negotiations with unions about benefits in perpetuity.
"We need to rule out that there is a not long-lasting effect in healthy people, " Volkow said.
However, last month, Mostyn refused to rule out administration "if it was in the club's best interests".
Considering his longevity, it would be foolhardy to rule out the chance of the 40-year-old achieving this ambition.
The 31-year-old played for Cardiff Blues for part of last season and refused to rule out a return.
BBC: Jonah Lomu played part of last season for Cardiff Blues
Rushing into a whole series of scans to rule out a small heart risk may not accomplish much.
Wilton refused to rule out the possibility that apartments and a hotel may be part of any redevelopment.
Ipso facto, German Chancellor Angela Merkel had to rule out haircuts for any current holders of Irish debt.
The point is not to rule out getting a better deal, based on assumptions about your credit score.
FORBES: Credit Scores Often Unreliable, Warns Consumer Financial Protection Bureau
Mr Byrne's decision to rule out an amnesty came as a campaign group published detailed proposals for the move.
BBC: NEWS | UK | UK Politics | Immigration amnesty is ruled out
She gave Mr Salmond the chance to rule out a separate Scottish currency.
And to rule out computer bugs, independent groups verified the calculations using several different versions of the modelling software.
Mr Miliband refused to rule out sending more troops, but told Today the military burden needed to be shared.
Northern Ireland Secretary Theresa Villiers said a thorough check prior to publication was necessary to rule out security breaches.
Intriguingly, he is also refusing to rule out a reconciliation with terrestrial TV.
This appears to rule out travel to anywhere except the International Space Station.
Leigh Halfpenny may not be considered as he requires an operation, with injury almost certain to rule out Mark Jones.
Powell's inflammatory speeches on immigration lead Heath, during the campaign, to rule out including him in any future Conservative cabinet.
Braafheid refused to rule out a permanent summer switch and revealed he jumped at the chance to sign for Celtic.
BBC: Celtic sign Fulham's Kamara, Braafheid and Well's Slane
He said the job cuts would be made through redeployment and voluntary redundancies, but refused to rule out compulsory redundancies.
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