In a match where only two shots on goal were recorded by the 40th minute, Inter made the most of their opportunities against Lazio.
Manchester United have announced they will play a seventh preseason game this summer when they face Sampdoria in Dublin on Aug. 30.
Japan international Keisuke Honda has said he will leave AC Milan when the Serie A season ends next weekend.
Mateo Musacchio is bidding to strengthen AC Milan's defence after flying to Italy for a medical.
Gabigol is yet to start a Serie A game for Inter and has scored once in nine substitute appearances.
Totti, 40, will not be offered another playing contract by Roma and former Napoli star Maradona hailed his career in a post on Facebook.