Playing career: England, Somerset, Worcestershire, Queensland, Durham. 102 Tests (12 as captain); 5,200 runs at 33.54; 383 wickets at 28.40.
For: Powers of inspiration and motivation. Charisma.
Against: Two-thirds of above are unproven - the England side he captained was not famous for team spirit. Inexperienced in management.
Current position: Northamptonshire player-coach.
Playing career: England, Middlesex. 64 Tests. 1,723 runs at 22.67; 147 wickets at 38.44.
For: Huge knowledge; forward thinking; respect from current players.
Against: Lack of meaningful management or coaching experience - just one England A tour.
Current position: Lancs coach, England U-19 coach.
Playing career: England, Lancashire. Nine Tests; 552 runs at 42.46.
For: Enthusiasm, motivation.
Against: Will what works with the Under-19s translate into the full international arena? Why do his Lancashire side still under-achieve in the Championship?
Current position: Warwickshire director of coaching.
Playing career: Worcestershire; no Tests.
For: Excellent management skills and track record, both as captain and manager-coach; knowledge; forward thinking.
Against: Lack of international experience.