Ultimate Team Transfermarkt mistaken purchases

Hi everyone, I've been a FC player for a long time and I finally want to give you feedback on something, and seriously, this is a suggestion and a deficiency in the game. When we buy a player in the transfer market, a warning should be added to the player's name, asking "Do you want to buy this player even though you already own him?" We might forget about a player in our squad, and we can't constantly check. This would eliminate erroneous purchases, preventing unnecessary loss of tokens or having to unknowingly sell a duplicate of a player we already own in the market. Instead of waiting for the player to be sold to regain the tokens, a warning should be displayed in the transfer market indicating that the player is already in our squad!