In November of 2013, having established himself as a world class, all-round centre-forward at the spearhead of Jurgen Klopp's thrilling Borussia Dortmund side, Robert Lewandowski announced his intention to move to Bayern Munich the following summer. In an era where strikers command eye-watering sums after just a single season of goalscoring prowess, Lewandowski's obvious pedigree at domestic and European level meant that Bayern had secured themselves the dream deal. At the age of 26, one can only speculate at the Pole's market value now.