Mr Brown has also said that he wants to concentrate any further increases in child benefit, which is a universal benefit, on those who need it most by taxing it for higher-rate taxpayers.

ECONOMIST: The budget

The early extension could also imply that Texas wants to reward Brown for his role in developing the most valuable college football program in the country.

FORBES: Texas Could Make $23 Million Mistake With Mack Brown Extension

Mr Brown is also under pressure from his own supporters not to come to Mr Blair's rescue without getting what he wants in return, as he has done in the past.

ECONOMIST: Tony Blair