Five England players have released for duty with their clubs for this week’s round of County Championship fixtures.
In the week they could be crowned champions, Division One leaders Essex will have Tom Westley available for the trip to Edgbaston to face Warwickshire.
The Bears, who could be relegated this week, will have Chris Woakes back.
But Essex are not allowed to use ex-England captain Alastair Cook, while second-placed Lancashire go to Somerset without seam bowler James Anderson.
Surrey opener Mark Stoneman will be allowed to play against Yorkshire, while the England and Wales Cricket Board have also freed Middlesex paceman Toby Roland-Jones and Hampshire spinner Mason Crane to face each other at Uxbridge.
To claim their first title since 1992 Essex must win at Edgbaston while hoping that Lancashire slip up against relegation-threatened Somerset at Taunton.
Ashwin in at Worcester, but no Moeen
In the race for promotion from Division Two, second-placed Worcestershire, who would go top if they beat bottom club Leicestershire at New Road, are not allowed to use Moeen Ali.
He is not in the England T20 squad for Saturday’s meeting with West Indies at Chester-le-Street, but will resume training on Friday in preparation for the start of the five-match one-day international series on Tuesday, 19 September.
However, Worcestershire have now been told that they will have India’s Ravichandran Ashwin available for both of their final games, following speculation that the spinner might be recalled for a one-day series against Sri Lanka.
This week’s fixtures
Division One: Warwickshire v Essex, Somerset v Lancashire, Middlesex v Hampshire, Surrey v Yorkshire
Division Two: Worcestershire v Leicestershire, Glamorgan v Northamptonshire, Sussex v Derbyshire, Gloucestershire v Kent