5 Bayern Munich players who significantly improved under Jupp Heynckes 

#4 Javi Martinez

Javi Martinez has moved back to the midfield under Heynckes

On Heynckes' return to the Allianz Arena, the first significant development that took place was the deployment of Javi Martinez in the midfield. The decision seemed surprising but reasonable.

Martinez had been playing as a centre-back for the past four years under Guardiola as well as Ancelloti. But it made sense because, ultimately, it was a tried and tested move. Martinez' midfield pairing with Schweinsteiger was a crucial part of Bayern's 2012-13 treble win. As the match progressed, it became clear that the move paid off.

Bayern's defence seemed much more composed due to the Spaniard's presence in front of them. Alongside making crucial interceptions and winning aerial duels, Martinez used his ball-playing skills to initiate attacks. His performances against RB Leipzig and Celtic proved that the midfield marshal was back at his best.