Nations to Watch means that anyone who has a Ones to Watch card whose country is involved within this year's World Cup will receive a one-time in-form upgrade when the team they represent wins during the tournament. Tough times for Erling on this particular front, according to reports due to Norway's lack of participation. ('Tough times for Erling' is not something we expect to write on many other occasions this year/decade/millennium.)
And, even better, Nations to Watch players don't even need to be chosen as a member of their national team to get the boost, so when Gabriel Jesus somehow doesn't make it into Brazil's squad, and his countrymen pick up the win in Qatar then the Arsenal player will still be eligible for the +1.
Additionally, it's important to note there is a limitation to Ones to Watch players do not receive upgrades in conjunction with other promo cards. So if Tyler Adams gets some sort of wild 90+ card during April in an upcoming promotion called Factsmashers or something similar that is the case, his OTW will not be upgraded in line with the promo. (Sorry Tyler. If this makes you feel any better, then you're literally everyone's pre-order OTW Pack.)
The unusual market for transfers of last year's behaviors meant that it was often practical and affordable to add good promo players to your team even within a couple of days after they came out. It could still be the case with FIFA 23, but for now the best Ones to Watch players are going cost you a substantial premium. Because they've not received any upgrades so it's difficult to recommend spending any coins on them.
If you want to learn more about FIFA 23 Coins,please vist https://www.mmoexp.com/Fut-23/Coins.html
