injury and substitution question

[Man in Grey]

Hi guys & gals, I am an european (Dutch) referee and we use the FIBA rules. On our forum we have a big discussion about whether or not you are allowed back on the court after you've been injured. Let me give you a couple of examples:

1 injury to player A8, player is substituted(event in 1st quarter, after 20 minutes he is able to play again. There are 5 players on the court for team a and also 1 sub.

2 Same as one, but with this difference: Team A has lost 1 more player to injury and another is fouled out, So just 4 are playing for team A.

Is player A8 allowed to re-enter the game in any or both cases according to your rules?

thx a bundle