That definition is quite wide now, as it includes all loanees (from Cat 1 academies), anyone who has played more than 40 first team games in their career, and anyone who is in the top ten appearances for the season (Which at this stage is pretty much anyone).
In other words, pretty much our entire first team squad would qualify as one of the four outfield players via one or more of the criteria set out:
Last Game - Nelson, BRannigan, Mackie, Ruffels, Henry, Holmes, Norman, Mous, Browne, Baptiste
Top Ten Apps (=5 or more) - GArbett, Dickie,
40 career apps - McMahon, CArruthers, Obika, Hall, Whyte, Hanson, Raglan
The only exceptions are Sam Smith, Sam Long, Dai
So we could play a team with Stevens in goal, Long, Dai, lopes and another 4 U23s without falling foul of the rules....
Personally I would go with a STevens in goal, an experienced backline of McMahon, mous, Raglan and Garbett, perhaps Baptiste and Long in the middle, then any four from Henry, Browne, Obike, Whyte, MAckie & Dai up front.....but, what the hell do I know?