The Chilean spent three successful years at the Nou Camp before his move to Arsenal in 2014.
Manchester United are desperate to offload the outcast but are struggling to find a club prepared to match his £500,000-a-week wages.
Only a small number of clubs will be able to afford the winger but it appears Barca won't be making their move.
According to Spanish publication Mundo Deportivo, Barcelona have told the Red Devils that any potential deal won't be happening.
Sanchez, 30, has only started eight league matches this season and United want to get him off the wage bill.
Boss Ole Gunnar Solskjaer knows his £25million-a-year wage packet means he faces an uphill battle in letting him leave permanently.
SunSport exclusively revealed how the Norwegian would be willing to let him leave on loan next season.
Sanchez was back in Catalonia to begin his recovery after sustaining a serious knee injury in the win over Southampton earlier this month.
The forward is facing eight weeks out with an injury that could end his season.
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