The days of having to sell our best players may be behind us, but it never stops you from worrying about other clubs showing interest in them from time to time.
Thankfully for Arsenal, their transfer and contract policy has improved significantly over the past couple of years and the majority of key first-team players are under long-term deals. Those that are running down like Bukayo Saka's, for example, will be viewed as a priority for the club to extend.
Of course, being under contract on long-term deals doesn't mean much in today's market, if a player is wanted and the buyer has the money, then there's nothing stopping them from at least trying to get their man. At the end of the day, every player has their price, however, they would also need to be willing to move and that tends to be the hope we all hang onto whenever our favourites are being linked elsewhere.