By Kieran King Chelsea boss Mauricio Pochettino has explained that “performance and balance” are the reasons why Thiago Silva has been dropped to the bench against Aston Villa. Pochettino made three changes to his Chelsea side for the FA Cup fourth round replay, with Silva, Raheem Sterling and Christopher Nkunku coming out. Benoit Badiashile is included to partner Axel Disasi in central defence, with Noni Madueke and Nicolas Jackson recalled to the attack. Silva’s omission comes a matter of days since his wife, Belle Silva, reacted angrily to the Blues’ 4-2 defeat against Wolves at Stamford Br…