The hugely popular midfielder is returning to say thank you and goodbye to fans after his summer switch to Borussia Dortmund.
Gross and fans did not get chance to say their farewell before his transfer.
With Dortmund playing on Saturday, he now has the chance to visit his former footballing home.
Gross will be interviewed at pitchside ten minutes before the 4.30pm kick-off on Sunday.
The last of his 30 Premier League goals came at Tottenham last season.
He also converted a crucial penalty against Spurs at the Amex to secure a 1-1 draw as Albion inched towards safety in their first Prem campaign.
Albion chairman Tony Bloom has described Gross as the club’s greatest-ever Premier League signing.
When Gross left, Bloom said: “The term legend is often overused, but in Pascal's case he is a genuine legend of this club and will be welcome back here at any time in the future."
Gross has been a regular in the Dortmund midfield this season and helped them thrash Celtic 7-1 in the Champions League in midweek.