#3 Philippe Coutinho (Liverpool to Barcelona)

Everyone is aware of how much Barcelona wanted Philippe Coutinho from Liverpool. The Catalan club was willing to pay an astronomical fee of £130m for the Brazilian.
Despite the fee that was offered by the Spanish club being very tempting, Liverpool managed to hold on to their number 10. However, it looks like Barcelona are planning to come back for Coutinho in January.
Another huge bid from the Ernesto Valverde-managed side might lead to Coutinho, who already has his heart set on playing with Lionel Messi, joining them in the winter transfer window. Even though Liverpool will miss the 25-year-old, he will be a huge addition to the Barcelona squad.
Xavi and Andres Iniesta were two key players in the midfield for Barcelona for a long time. However, Xavi has already left the club and Iniesta is on the wrong side of his 30s. Replacing these two legends is one of the biggest challenges Barcelona is facing now.
Ivan Rakitic was bought by the Catalan club in 2014 with the hope of replacing Xavi, but the Croatian has not been able to reach the levels of the Spanish legend. Coutinho, who is heading into the prime of his career, could be the right player to replace one of Barcelona's best midfielders of all time.