England stars Stuart Broad and Ben Stokes are set to make their comebacks from injury in the Division One match between Nottinghamshire and Durham on Sunday.
It will be their action since England's ICC World Twenty20 campaign ended early in Bangladesh two months ago.
Nottinghamshire fast bowler Broad has been resting patella tendonitis in his right knee but he will be hoping to prove his fitness with the Test series with Sri Lanka looming, with the opener beginning on June 12.
His Nottinghamshire team-mate Phil Jaques told his club's website: "We're likely to have Stuart Broad coming in this week.
"He's another world-class performer, and it makes the bowlers want to play out of their skins - because they know they're playing for places."
All-rounder Stokes could also return for Durham, having been out of action since breaking his hand after punching a cupboard in Bangladesh.
He has been named in the Durham squad for the Trent Bridge match, as has another England Test hopeful Graham Onions, would could make his return from a back injury.
Test wicketkeeper Matt Prior identified Sussex's match against Middlesex at Northwood - starting on Monday - as a possible comeback date, although it is highly likely he would be used as a batsman only.
All three players would then have just one more Championship match in which to prove their fitness before the England selectors pick their team for Lord's.
Meanwhile, Alex Hales has been added to the England ODI squad for the second Royal London One-Day International against Sri Lanka as cover for Alastair Cook, who has right groin tightness. Cook will be assessed ahead of Sunday's game.