[9] On 11 July Bengaluru FC announced signing of Spanish midfielder Dimas Delgado who last played for A-League side Western Sydney Wanderers.
[11] On 21 July, the club announced retention of under-22 players, defender Nishu Kumar, midfielder Malsawmzuala and striker Daniel Lalhlimpuia for a season.
[12] In ISL draft held on 23 July 2017, Bengaluru FC retained goalkeepers Lalthuammawia Ralte and Calvin Abhishek, midfielders Lenny Rodrigues, Alwyn George and Harmanjot Khabra.
Defender Keegan Pereira, midfielders Eugeneson Lyngdoh and Shankar Sampingiraj were signed by Atlético de Kolkata.
[16] Bengaluru fc added their academy graduates defender Prashanth Kalinga and forward Leon Augustine to the squad for 2017 AFC Cup knockout rounds.
[20] During winter transfer window, Bengaluru FC released injured striker Braulio Nóbrega and signed another Spaniard Daniel Segovia on 15 February 2018, in a short-term deal till the end of the season.
[22][23] Bengaluru signed Spanish midfielder Víctor Pérez Alonso as a replacement on a short team deal for the rest of the season.
[24] Bengaluru FC, having completed the squad selection at 2017–18 ISL Players Draft, arranged a 10-day pre-season training camp in Murcia, Spain before facing North Korean side April 25 Sports Club.
During the AFC cup campaign, Bengaluru FC played India national under-19 football team and won with a solitary goal from Daniel Lalhlimpuia.
After the conclusion of 2017 AFC Cup and before 2017–18 Indian Super League season, Bengaluru FC played two games against the former I-League rivals East Bengal F.C., behind closed doors.
In the final friendly before ISL, Bengaluru FC played yet another I-League side Minerva Punjab F.C., and lost the game 2–3.
Despite wonderful link up play between the forward duo of Chhetri and Miku, the hosts lacked finishing in the final third in the first half.
In the second half, Bengaluru scored their first goal in ISL, courtesy a short corner routine, when Edu Garcia drilled one past former BFC man Amrinder Singh at the near post at the 67th minute.
Bengaluru FC made multiple changes, including bringing in Lalthuammawia Ralte to replace Gurpreet Singh Sandhu, who was suspended for 2 games.
[34] Bengaluru played the first game of 2018 at home against ATK on 7 January 2017 and won it 1–0 courtesy a goal from Sunil Chhetri in first half.
Sunil Chhetri scored a brace against his former team and with a goal from Miku, Bengaluru registered a comfortable 3–1 win and climbed back to the top of the table.
Bengaluru were denied a clear penalty opportunity in the dying minutes of the game and settled for their first draw of the season in Indian Super League.
In the final game of the league stage, Bengaluru faced southern rivals Kerala Blasters at the home on 1 March 2018.
The game remained deadlocked until Miku and Udanta Singh scored two goals in injury time to finish the league stage with a win.
[45] In the return leg played at home, Bengaluru FC defeated Pune City 3–1 to enter final in their debut ISL season.
Bengaluru FC's relentless attack in the dying minutes earned them a second goal by Miku, but Chennaiyin held on to the lead and emerged winner.
In football, you need players with his kind of experience to rise to the situation.Bengaluru FC advanced to the inter-zone play-off semi-finals during 2016–17 season.
Facing crowded schedule in continental games and domestic league, Bengaluru FC fielded an inexperienced squad in the away leg.
With upcoming Indian Super League final, Roca rested the key players and fielded the reserve side.
Having rested many key players, Bengaluru failed to find many scoring opportunities and Roca was forced introduce Sunil Chhetri late in the second half and that turned out to be significant as Chhetri managed to shake off his marker in the dying minutes and created an assist to Nishu Kumar and Bengaluru won the close game 1–0.
[62] In the final game of the group stage, Bengaluru FC scored a convincing 4–0 victory against Dhaka Abahani, with a brace from the defender Nishu Kumar and goals from Daniel Lucas Segovia and Sunil Chhetri.
on the final match day, Bengaluru advanced to the knock-out stage of the tournament for the fourth consecutive year, played in 2018–19 season.
Determined Gokulam Kerala side took the lead in the first half as Henry Kisekka beat the offside trap to score the goal.
[67] Midway through the season, Bengaluru FC parted ways with the assistant coach Carles Cuadrat owing to health concerns.
[84] Football Players Association of India's Annual Awards for the 2017–18 season, held at the Calkutta Sports Journalist Club, in Kolkata, on 12 June 2018.