In which year was the older football player born out of Mehdi Mahdavikia and Ali Daei? 
Mehdi Mahdavikia: Mehdi Mahdavikia (Persian: ‎ ‎ , born 24 July 1977 in Tehran) is a retired Iranian football player who played for Persepolis, Hamburger SV, Eintracht Frankfurt, Steel Azin, Damash Gilan and also the Iran national football team.
i don't know