The curious thing about Krasic is his drop in form which was mainly put down to fatigue. I saw a highlight video of him when he was on fire with us at the beginning of the season and I noticed a stark difference in his playing style. He's been dubbed by a lot of members as a one dimensional player who's extremely predictable (his dump in form apparently came down to awareness of other clubs which resulted in double marking) but if you compare when he played well to when he played poorly you notice major differences in his style.
Its not just pace that made him so good, it was his ability to move unpredictably and change direction quickly in one on ones rather than simply outrunning his marker along the line where he's much more limited. Since he started playing poorly its almost like watching another player. He's extremely predictable and plays strictly along the line constantly trying to beat his marker(s) for pace. I don't think that comes down to fatigue but more lack of confidence and imagination. I really do hope he's not going to be the next Amauri or Diego, where his confidence is zapped after a negative season and isn't able to redeem himself.