Antonio Conte ’ s side progressed to the last four after a 2-1 win against the Germans.
Sanchez completed a permanent move to the San Siro last week, ending a nightmare stint at Old Trafford that saw him score just five goals in 45 appearances.
Inter have signed Ashley Young and Romelu Lukaku as well as Sanchez from United in the last 12 months and the Serie A giants are favourites to reach the final in their side of the Europa League draw.
United possess a slightly more difficult route but they are also favourites to reach the last, which would set-up a tantalising affair towards the two-time Champions League winners.
However, Sanchez’ s hopes of starring against his former side in that will scenario are under threat as reports in Italy have revealed that he sustained an injury in the final stages associated with Inter’ s win.
Sanchez continued through the pain but he complained about the issue afterwards and he will undergo further assessments tomorrow to reveal the severity of the injury.
The Chilean was United’ s highest earner on around £450, 000-a-week, which created many issues within the dressing room.
United found a number of players subsequently demanded more money in contract negotiations with the particular club, both from players already at the club and through prospective new signings.
Aside from that was the fact that Sanchez failed to deliver in a terrible 18 months at the club and he was loaned to Inter last summer.
Sanchez has impressed enough to earn a three-year deal at the club and he’ d love nothing more than to beat his former employers.