The Italian playmaker’s contract is set to expire next summer and, as of yet, the Serie A champions have not offered an extension.
It is thought that manager Antonio Conte is undecided as to whether or not to hand the 34-year-old a new deal as he looks to build his squad for next season.
Pirlo has just three months to convince the Turin-based giants of his abilities, with the club open to the possibility of selling in January rather than letting him run his contract down.
The news has alerted United and Chelsea, who are both believed to be in the market for additions once the transfer window re-opens.
Red Devils chief David Moyes is desperate to add some creativity to his ranks, and could use the Italian as a short-term solution.
Meanwhile, Jose Mourinho has been a fan of the holding midfielder for some time and may be tempted to offer him the chance to end his playing days at Stamford Bridge.
Rumours of Pirlo’s exit have further intensified with Juve’s pursuit of Xabi Alonso.
Does Andrea Pirlo still have what It takes to be a Premier League success?
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