The squad also includes Real Madrid midfielder Federico Valverde, Juventus midfielder Rodrigo Bentancur and Inter Milan defender Diego Godin.
Domenec Torrent's team looked a shadow of the side that dominated Brazilian and South American football last year as Independiente secured their third win from as many matches and rose to the top of Group A.
Koeman has worked with the majority of the Barca squad for three weeks and said he was content with the work done so far.
Cologne had the worst possible start on home soil as Jonas Hector's return pass was intercepted by Kramaric, who kept his cool and nutmegged goalkeeper Timo Horn for the opener with only three minutes gone.
"As for the fans, no matter when I get injured, traded or defeated, you always support me, which gives me great belief," he added.
In other fixtures on Saturday, Bragantino beat Ceara 4-2 and Fortaleza overcame Internacional 1-0. Enditem
Flamengo remain second in the group with six points from three matches but with a negative goal difference.
Suarez was not included in the squad for the game and the first question Koeman had to field from Catalan TV network, TV3 was about the striker as the Uruguayan continues to train apart from the rest of the squad ahead of a possible transfer.
Capped seven times for Brazil's national team, Neves has also had spells with Fluminense, Flamengo and Germany's Hamburg over a career spanning more than 15 years.
The 87-year-old Senegalese was sentenced to two years in prison, with another two years suspended. The court also imposed a fine of 500,000 euros (about 592,500 U.S. dollars) on Diack.
The second half saw Sharjah take the first lead after Moroccan defender Medhi Benatia received a red card for an elbow on Sharjah playmaker Igor Coronado, who beat the goalkeeper with a curled effort, but the ball bounced off the upright and fell to midfielder Majed Surour whose diving header help Sharjah establish the lead for the first time in the tie.