This "red exclamation mark" applies for all players from you sqaud, who don't have 10%.

All you need to do is:
- 2 training sessions using 2 x free video ads selecting all players: warm up warm up video analysis video analysis skill drill skill drill
- after another 1 or 2 training sessions without using free video ads and selecting only subs and reserves: warm up stretch video analysis video analysis pass go and shoot skill drill