Bayern Munich striker Robert Lewandowski has once again urged his side to focus on signing top-class recruits in the transfer window. The Poland international feels the Bavarian giants need to invest on a regular basis in order to remain competitive at the highest level of the game.

Earlier in September, Lewandowski demanded the club to sign more world-class players with money playing a big role in the success rather than player loyalty. However, Bayern chief Karl-Heinz Rummenigge did not agree with the striker's comments and insisted that Pole should carry on doing his job for the hefty salary he earns.