The players have cleared their quarantine period, health check-ups, and have also received vaccines for a stronger and healthier kick start to the season.
Slavko played a pivotal role in Buducnost Podgorica’s fourth Montenegrin League title in 2019-20 and also featured in their Europa League qualifying matches that year.
The 24-year-old Indian defender commits long-term future with the Indian Super League club.
The Manipur-born winger will ply his trade for Jamshedpur till May 2024, having signed a 3-year contract with the Jharkhand-based side.
The 22-year-old defender is coming off a season where he helped Sporting Clube de Goa to the Goa Pro League title.
Devrani had turned out for FC Pune City in the inaugural edition of the ISL in 2014, and now makes his comeback to the competition seven years later.
Two-time Indian Super League (ISL) champions Chennaiyin FC (CFC) have signed Mirlan Murzaev on a one-year deal.
Enes Sipović becomes the second foreign signing at Kerala Blasters FC joining Uruguayan midfielder Adrian Luna who was announced last week.
The duo, who joined from NorthEast United, have each signed three-year contracts till the end of the 2023-24 season.
Roy Krishna scored 22 goals in 23 matches last season and won the Golden Ball award for the best footballer in the ISL.