Messi was hailed as the 'best player in the world' by PSG boss Mauricio Pochettino on Monday in his pre-match press conference.
But Anelka believes that Messi, who arrived in the summer on a free from Barcelona, must now play a role to 'serve' Mbappe, rather than be the centerpiece of the side.
Kylian Mbappe is 'No 1' at PSG and Lionel Messi (right) must respect him, says Nicolas Anelka
Anelka (centre) believes Messi must show respect to Mbappe, who has been at PSG since 2017
'Mbappe has to lead the attack because he's No 1,' Anelka told Le Parisien.
'Messi was at Barcelona, but now he has to serve Mbappe. He's been at the club for five years and Messi has to respect him.'
Mbappe has a year left on his deal and is yet to reach an agreement over an extension