Internazionale have indicated all members of Luciano Spalletti's squad not involved in this summer's World Cup finals will travel to England for this month's friendly at Bramall Lane.
The Italian giants, three time European champions and multiple winners of the Serie A title, are believed to have issued the undertaking before their July 24 meeting with Sheffield United was announced.
That means Croatia midfielder Ivan Perišic and Uruguay's Matias Vecino are expected to be Inter's only notable absentees during the fixture, with new signings Radja Nainggolan and Stefan de Vrij expected to feature alongside captain Mauro Icardi. The Argentine, who controversially missed the tournament in Russia, has scored 107 goals in 182 appearances since moving to the Stadio Giuseppe Meazza from Sampdoria. Nainggolan, a £33m acqusition from Roma, confirmed his international retirement after being dropped by Belgium manager Roberto Martinez.
Spalletti's committment to naming a strong team will come as a relief to United, who are likely to have invested heavily in order to secure the game. Fenerbahçe, who faced them in 2014, are believed to have been paid significant expenses throughout their trip. The Süper Lig side, who elected former United director Selahattin Baki to their board earlier this summer, later wrote a letter congratulating Chris Wilder's squad on their promotion to the Championship 15 months ago.
Inter finished fourth in their domestic competition last term, ahead of Lazio by virtue of their superior head to head record.