Some stats from last season you may or may not find interesting:
Tackles: Jagielka 1.8 (55), Distin 1.6 (42), Heitinga 1.3 (40)
Interceptions: Distin 2.5 (67), Jagielka 2.1 (63), Heitinga 1.5 (44)
Offsides won: Heitinga 0.9 (26), Distin 0.9 (24), Jagielka 0.6 (18)
Clearances: Jagielka 7.6 (229), Distin 8 (215), Heitinga 5.4 (162)
Was dribbled: Heitinga 0.3 (10), Jagielka 0.3 (9), Distin 0.3 (7)
Blocks: Heitinga 1.1 (33), Distin 0.6 (17), Jagielka 0.5 (14)
Aeriel duels: Distin 2 (53/77), Jagielka 1.8 (54/75), Heitinga 0.8 (24/47)
(all figures per game)
So for as much as Heitinga is a war dog and throws his body in the way, which is obviously what the fans want to see from our players considering his POTS accolade, he was statistically the poorest of our first choice centre-backs last season in four key areas for a player of his position.
His aerial duel success rate of 52% in particular was very poor, yet he started both games v Stoke. Jagielka is only an inch taller yet his success rate is considerably better.
Don't get me wrong, he was a rock at the back end of last season, but I really don't think it's the end of the world if he leaves.