United have endured a miserable campaign and currently sit 13th in the Premier League.
Their struggles have continued under Ruben Amorim, who replaced Erik ten Hag in November, with the Red Devils winning just four of their 14 league matches since his arrival.
Despite spending around 180 million pounds last summer on Joshua Zirkzee, Noussair Mazraoui, Matthijs de Ligt, Leny Yoro, and Manuel Ugarte, United were unable to strengthen significantly in January, only signing Patrick Dorgu from Lecce.
According to Spanish outlet Fichajes, United are now planning a squad overhaul and could cash in on Garnacho to fund a deal for Balde.
The Spanish international is seen as a key target for Amorim, who wants to reinforce the left-back position despite Dorgu's recent arrival.
Garnacho has made an impact off the bench but has struggled to secure a regular starting role.
While Amorim is said to appreciate the Argentine's talent, United's financial constraints and defensive needs could force them to sacrifice the winger.
Barcelona are reluctant to let Balde leave, reportedly valuing him at around 50 million euros.
However, United could raise funds through Garnacho's sale, with Napoli and Chelsea already showing interest in the 19-year-old in January.
Roberto De Zerbi wants Tottenham Hotspur to turn the fighting spirit they showed against Manchester United into a stronger team as they prepare for their next Premier League match.
Morgan Rogers has credited Xabi Alonso's team talks for Chelsea's impressive starts to matches this season after the Blues raced to a 5-1 victory over Bournemouth at Stamford Bridge.
Manuel Akanji has admitted he is unsure what will happen to Manchester City's trophies following the club's guilty verdict over financial rule breaches, but the Inter Milan defender hopes he will get to keep his titles.
Michael Carrick has praised Mikel Arteta for building a successful team at Arsenal but admitted that the Spaniard's achievements are difficult to celebrate because of Manchester United's historic rivalry with the Gunners.
