7 Transfer Window Mysteries That Will Never Be Solved

Sometimes the reasons why a club has signed a player are obvious and clear, perhaps because they offer obvious quality, are brought in to add strength in depth, or maybe they just have long-term potential and could flourish in the future. On other occasions, the logic behind signings is a complete mystery that might never be solved. Here's a look back at seven such cases involving high profile clubs in recent memory... ​Papy Djilobodji to Chelsea (2015) Senegalese centre-back Papy Djilobodji... Via All the latest breaking football news, transfer rumours, analysis, and match reports - 90min http://www.90min.com/