Simone Inzaghi told Inter to forget Monday's dismal defeat to Empoli, after which the Nerazzurri were still not giving up hopes of winning Serie A.
Inter remained 13 points behind runaway leaders Napoli after going down 1-0 at home following a first-half Milan Skriniar red card.
Inter have "no possibility" of renewing the contract of Milan Skriniar beyond its expiration date in June, according to the defender's agent Roberto Sistici.
Skriniar was strongly linked with a move to Paris Saint-Germain last year, but no move materialised and the centre-back began renegotiating a new deal with Inter.
Inter were brought crashing back down to earth after their Supercoppa Italiana win as they were deservedly defeated 1-0 by Empoli at San Siro on Monday.
Simone Inzaghi's side looked to be set for a big second half to the season after dismantling champions and rivals Milan in Saudi Arabia last week.
Milan can have no excuses for their heavy Supercoppa Italiana loss to Inter and must now "grow up and take responsibility", according to defender Simon Kjaer.
Stefano Pioli's side were on the end of a 3-0 loss at King Fahd International Stadium in Riyadh on Wednesday as fierce rivals Inter retained the cup.
Inter retained their Supercoppa Italiana crown with a convincing 3-0 victory over fierce rivals Milan at King Fahd International Stadium on Wednesday.
Simone Inzaghi's side have been in far better form than Milan since the World Cup break and that showed in Riyadh as they raced into a two-goal lead inside 21 minutes.
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