The Chilean international has officially signed on the dotted line at Old Trafford and leaves the Emirates after a three - and -
a-half year spell with Arsene Wenger's side.
Argentina international Javier Mascherano has revealed that it was a thankless task of playing in central defence during his seven - and -
a-half year spell with Barcelona.
Not exact matches
The deal, which is thought to be worth around # 6million, has seen Babel sign on a two - and -
a-half year contract to end his
spell at Anfield.
Rulli will eventually sign a five - and -
a-half year deal at the Anoeta in due course after another loan
spell.
The former is at the start of his coaching career with Liverpool U18s while the latter is two - and -
a-half years into an Anfield project which followed successful
spells at the helm of Mainz and Borussia Dortmund in Germany.