Messi, who will turn 33 later this month, has scored 21 goals in all competition for Barcelona so far this season.
According to the Daily Express, the La Liga champions believe Neymar and Martinez can both replace Messi one day at the Nou Camp.
The Catalan club is keen to sign both the Brazilian and Argentine internationals this summer’s transfer window.
DAILY POST recalls that both Neymar and Martinez have drawn the interest of Barca in the past.
Neymar and Martinez have been impressive for their respective club sides so far this term.
Meanwhile, Barcelona manager, Quique Setien, has since admitted that he would love to coach both players at Camp Nou.