how many taranfers round of 16 wc fanstay

In FIFA World Cup Fantasy, you get 4 transfers before the Round of 16.

Quick note

The official help page also says you get:

• Unlimited transfers before the Round of 32.
• 4 transfers before the Quarter-finals.
• 4 transfers before the Semi-finals.

If you meant something else

Your wording looks a bit mixed, but for the Round of 16 transfer limit, the answer is still 4.