Last year's LV= County Championship Division One winners are looking for someone to replace Ashley Giles, who stepped down from his role to take charge of England's limited overs sides.
Australian Saker admitted he was impressed by the county's overtures but believes he still has plenty to achieve with England, telling The Guardian: "I had talks with Warwickshire and it was certainly an attractive offer they made. But it has come a little too early for me."
He added: "I have unfinished business with the England team and I would like to take that through at least until the end of the 2015 World Cup."
Saker was appointed England's bowling coach in April 2010 after Ottis Gibson quit the role to become head coach of West Indies.
The 46-year-old played a key role last year in helping England win the Ashes Down Under for the first time since the 1986-87 series.
He was subsequently rewarded with a three-year contract, which is due to expire in 2014.
- Sports & Recreation