The 35-year-old came on in the 78th minute to set a new record of 151 Champions League appearances in Barcelona's 3-1 win over Juventus in the Berlin final.
Having started at the Catalan giants as an 11-year-old, Xavi will join Qatari side Al Sadd next season. He admitted that leaving Barcelona will hit him hard having just won his 25th title with the club.
"To leave this way is brutal," said the Spain international, who lost his place in the starting side to Ivan Rakitic this season.
- Triumphant departure -
More From This Section
========================
Xavi said the best thing for Barcelona now is for Luis Enrique to stay on with the head coach having left his future open, despite winning the treble of European, cup and league titles in his debut season.
"Luis Enrique deserves this because he's had a lot of criticism, but he's been a great leader for the side. The best thing for next year is for Luis Enrique to stay," said Xavi.
"Xavi deserves everything," said Pique.
"He is leaving us with an important legacy: how to play football and take on victory and defeat. He will always be with us.