The Chile international opened the scoring at Liberty Stadium on Sunday before Arsenal collapsed and conceded two goals in the final 20 minutes to lose 2-1 to Swansea City.
Sanchez has scored eight goals in 11 Premier League games following his £35m move to the north London side from La Liga giants Barcelona in the summer transfer window.
And former Arsenal striker Wright can see Sanchez leaving the Gunners next summer unless Arsene Wenger’s side can dramatically improve over the course of the campaign.
If Sanchez carries on at this rate, someone will pinch him off us next season.
— Ian Wright (@IanWright0) November 9, 2014
Sanchez has scored 11 goals in 15 appearances in all competitions following his big-money switch to the FA Cup holders.
Arsenal are sixth in the Premier League table and two points behind fourth-placed West Ham United after their latest defeat.
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