What is the soccer transfer window?

Related questions

1. What age do football clubs sign players?
2. Who pays the salary of a player on loan?
3. Can you still loan players after transfer deadline?
4. When January transfer window opens?
5. Do footballers get a cut of the transfer fee?
6. Does player get transfer fee?
7. Is Chelsea transfer ban lifted?
8. How many foreign players can play in the Premier League?
9. Is there a January transfer window 2019?
10. How much was Ronaldo's transfer fee?

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8. #window
9. #associations
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11. #players
12. #transfers
13. #their
14. #transfer
15. #possible
16. #playing
17. #football
18. #association