- Modric bows out -
Alonso demonstrated his tactical flexibility during the tournament by changing between a back-four and a three-man central defence.
Kylian Mbappe was used sparingly and sat out the group stage after being hospitalised with a stomach bug, but there were positives elsewhere.
New signings Trent Alexander-Arnold and Dean Huijsen got their first taste of action for the club, and young striker Gonzalo Garcia made a big impression with four goals in the first five matches.
Luka Modric, 39, made his farewell appearance against PSG, bringing down the curtain on a glorious 13-year spell at the club. He is now set to join AC Milan.
"This game is the last match of this season, not the start of the next one," Alonso insisted.
"We will take positives away from this. We come away from here a better team and I am convinced this will help us start next season better."