Preston North End striker Kevin Davies can see similarities between West Ham United boss Sam Allardyce and Manchester United's Louis van Gaal.
Davies played for Allardyce at Bolton Wanderers and has followed his long ball jibe at Van Gaal.
"When we had team photos at Bolton, there were more staff than players. If Sam dropped a player, he'd slap a load of stats down to justify the decision; distance covered, speed, recovery.
"Every 10 weeks, everyone would be evaluated, how much you were doing in training and matches and where you had to improve.
"I think Van Gaal is that kind of person as well, in the way he studies games. How many managers would take off a goalkeeper at the end of a World Cup game because the substitute had better stats saving penalties?"
