The Belgian joined the Serie A giants from Manchester United in the off-season as Antonio Conte targeted a new striker to lead the line this season.
Lukaku took the No.9 jersey occupied by Icardi, who was later loaned to Paris Saint-Germain for the rest of the 2019/2020 season.
While Icardi and PSG prepare for the Champions League last 16, Inter dropped to the Europa League after finishing third in their group.
"It would be good to see (Lukaku) in big games too," Nara told Tiki Taka, according to the Daily Mirror.
"He hasn't scored in the Champions League, he'll watch the knockout rounds on TV.
"The last No. 9 only scored about 150 goals for Inter."