The 34-year-old joined the Islanders from fellow City Football Group side and A-League outfit Melbourne City FC for a one-year contract, until the end of the 2022/23 season.
A product of FSV Frankurt's youth academy, Sliskovic made his professional debut at the age of 19 in the Bundesliga with FSV Mainz and played for the club for five seasons, until 2015.
Born in Manipur, Meitei started playing football at the age of 10 years. After training for several years, he managed to make it into the district team and then the Manipur football team in the youth nationals.
The 29-year-old remains a key part of Juan Ferrando's plans at the club and is certain to play a vital role not just in the Hero ISL but also in the Mariners' AFC Cup campaign.
The 25-year-old, who most recently turned out for SC East Bengal in the Indian Super League, is the Blues' fifth signing under Simon Grayson, following the acquisitions of Prabir Das, Javi Hernandez, Faisal Ali and Amrit Gope.
The German who was appointed as the club's new head coach on June 15 wants to provide Indian fans with a glimpse of German football and has vouched to play an attacking brand of football which would make the Chennaiyin FC fans proud.