According to this interesting, if ultimately a bit pointless, UEFA survey (PDF, 4MB). Damned Universitatea Craiova are ahead of us though.

We're third in the table of percentage of players under 22 (50%). Think it relates to last year.

Should set Shakespeare on UEFA for calling us UC Dublin.

Edit - should quantify "seventh youngest squad in Europe" as including only top flight teams in their sample of 30 (of 56?) UEFA leagues.