That is according to former Arsenal striker and pundit Paul Mariner, who says the club can afford to give the duo the wages they demand but are not willing to do so.
Sanchez and Ozil are out of contract at the end of next season and, especially Sanchez, have been linked with Emirates exits, with Manchester City wanting the Chile forward.
The pair are the highest earners at the club but are wanting an increase to make them the first £300,000-a-week players in Arsenal's history.
However, the Gunners are not willing to break their wage structure dramatically, which could lead to the players leaving this summer or at the end of their current deals on free transfers.
If players want £300,000-a-week and Arsene Wenger's not going to pay, let everybody know we're going to let Alexis Sanchez go or Mesut Ozil go
Mariner says fans should not believe statements from the club that Arsenal cannot afford to pay as much as some of their rivals.
But if they are not going to give Sanchez and Ozil what they want, then they should make fans aware they will be on their way.
"I think everybody out there, all the fans out there, don't understand that statement," he said on ESPN FC.
"If they think they can't afford top top players, they can.Â
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"Arsenal have got the money, they've got the backing of the board, everything.Â
"It just puzzles me that if players want £300,000-a-week and Wenger's not going to pay, then okay, let everybody know we're going to let Sanchez go or Ozil go.Â
"But you've got to have replacements, otherwise Arsenal will become and also-ran football club and that cannot happen."