United boss Ole Gunnar Solskjaer has set his sights firmly on Sancho, making the Englishman his top target. Negotiations have been ongoing all summer, but Dortmund set an artificial deadline of mid-August for United to pay €120m, and after the Red Devils declined to do so, Dortmund have repeatedly insisted the whole saga is over.
That was the tune Favre opted for during a recent interview with Keystone-SDA, in which he was asked whether he was relieved to have definitively fought off United's interest.
"We need him, no question about it," Favre said (via Bieler Tagblatt). "Everyone was happy that he stayed.
"We don't need to talk long about his qualities - they are enormous. He scores and prepares many goals, can often make all the difference. But there are a few details that Sancho needs to improve. That's normal for a 20-year-old."
Despite Dortmund's public stance, it is understood that talks are still ongoing. United have made a breakthrough with Sancho's personal terms and agent fees, but the all-important agreement with Dortmund over a transfer fee is yet to arrive.
United had initially been reluctant to break the €100m mark and were hoping to see Dortmund drop down from their €120m asking price, but the German side's determination to stand firm has left United frustrated.
While talks will still continue, United are believed to have started looking for alternatives. The likes of Juventus' Douglas Costa, Inter's Ivan Perišić and Bayern Munich's Kingsley Coman have all been touted as potential targets, while it has been confirmed to 90min that United are one of seven sides considering a loan move for Real Madrid winger Gareth Bale.
For now, the focus remains on Sancho, but United are wary of sticking with this deal for too long and leaving themselves vulnerable if they fail to get a deal over the line by the time the transfer window shuts in October.