Why some on-loan footballers have better performances than in their original team?

Some players suffered a tough playing time in his own team but were immediately triggered by another team after the on-loan deal. Name your player who went on loan and got their careers back on track, why the players have such big changes in the different team.  

EXCITING NEWS for AF EXPERTS: 

From today on, we will select some of your most convincing comments and post them here, sharing with all AFers! So speak out what's in your mind, show us your football-related knowledge and be as convincing as possible! You are to be the next AF EXPERT now! 

Reminder: 

1. If your comment doesn't have any convincing reason, it will be removed. 

2. If you try to get hot comments by copying, your comment will be deleted and you will be banned for one day.

Experts of last daily topic: If you joined your favourite team, what would you say in the press conference?

@Barcelona-Arsenal:

Joining Barca:

"I'm privileged to play in a club with such a great history, and im ready to help the legacy of barca even further."

Joining Arsenal:

"I want to commit myself to be the best player i can, for the faithful fans who are looking for a glimmer of hope by someone, to take them to the next level and hopefully win some major silverware."

 @MfundomoyoNo7:

Barça: wow ! I m surprised to get to see myself in front of you people ,talking about this . I’m It’s been a life long dream wanting to join this club . Being a child watching footballers like Lionel , Ronaldinho , Luis Suárez and Iniesta was a joy , now to say that I’m currently in the squad is breath taking . I’m happy , now I can write my name into the history books.