To qualify as home grown he needs to stay at the club for the next two years, but don't get to fixated on that fact WJ. Remember in our 25 man squad of players aged 21 or over, only 8 of these have to be home grown.
If the club thinks a player will be of more benefit to the club in years to come , by going out on loan to a foreign FA, as opposed to keeping that player here to enable him to gain home grown status, but at the sacrifice of his development, then its worth it.
Our 8 home grown players for the start of this season will be Ayling, Cooper, Bamford, Philips, Roberts, Strujik, Davis and Shackleton. Poveda becomes home grown next season as apparently the over aged status is based on your age at the first of January of that year. As Poveda didn't turn 21 until February, so for this season he is classed as being an under 21 player.
In addition despite still being classed as under 21 players and thus having no need to be registered to play for the first team, Casey, Greenwood, Gelhardt, Dramah and Huggins have already qualified as home grown players.
As well as Poveda, Meslier, Bogusz, Cresswell and Jenkins will also have the potential to qualify as home grown players before the commencement of the 2022/23 season