Free-scoring Bayern Munich striker Robert Lewandowski is arguably the most prolific No. 9 in world football, but the Poland international could have been on the books of Real Madrid were it not for one bad decision by the club.
In 2013, following a four-goal haul by Lewandowski that stunned Real in the UEFA Champions League, the then-Borussia Dortmund star became a priority transfer target for the Spanish outfit's president Florentino Perez.
The following year, Los Blancos had the opportunity to sign the Warsaw-born forward but opted against paying the €20 million (R381 million) fee it would have cost to break his pre-agreement with Bayern, who had already reached a deal with him over a free transfer from Dortmund.
According to Spanish publication AS, Perez made the decision not to snatch Lewandowski from under Bayern's noses as he did not want to cause bad relations between the two clubs, and was also satisfied with the output of incumbent striker Karim Benzema.
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The four-time Bundesliga Golden Boot winner has since scored 232 goals in 278 appearances for the Bavarian giants, and is one of the favourites to win the 2019/20 European Golden Shoe award, for which he is currently level with Lazio's Ciro Immobile on 27 league goals for the campaign.