Sanchez has cut a frustrated figure at Arsenal in recent months.
The Chile international has scored 22 goals across all competitions to drive the Gunners towards the top four.
However, his contract expires next summer and as of yet, no renewal has been agreed.
Where could Alexis Sanchez go next?
Thu, March 30, 2017
Where could wantaway Arsenal striker Alexis Sanchez go next?
Arsenal FC via Getty Images
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Where could Alexis Sanchez go next if he leaves Arsenal?
Alexis Sanchez has cut a frustrated figure for Arsenal this season
Sanchez's public displays of annoyance has led to plenty of talk he will leave the Emirates at the end of the season.
But Bellerin believes his strops are merely down to his hunger for success.
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“He wants to train hard every day, not just what we have to do on the pitch but outside of it,” Bellerin told Arsenal Player.
"Sometimes he’s the first one to tell other players when we’re not giving 100 per cent.
Hector Bellerin has heaped praise on Alexis Sanchez
“He’s a leader, we have loads of leaders in the dressing room but he’s the first one to get frustrated.
"Everyone sees that when he’s not happy he’s very expressive.
"Some people don’t show it as much as him, but when we lose or things don’t go well everyone gets frustrated."