(Squad Build and First Transfers) Selangor started the summer in December when P. Maniam was officially announced as its new coach for one season.

On 28 December 2016, P. Maniam added some new faces to the club's academy after losing several key players who moved to other teams.

The players who were promoted to the first team were A. Namathevan, K. Kannan, Amirul Ashraf, Faizzudin Abidin, Badrul Amin, K. Sarkunan and Syahmi Safari.

[8] Due to problems, Selangor will play their official home matches for the entire season at the Selayang Stadium.

Among them are: Afiq Azmi (Negeri Sembilan), Halim Zainal (Kuala Lumpur), K. Satish (PKNS), Fairuz Abdul Aziz (AirAsia FC) and Nurshamil Abd Ghani, a player who is on loan from Melaka United.

Azmi Muslim left the club on the same day, and was transferred to PKNS FC after three years with the Red Giants.

[9] Hazwan Bakri and R. Gopinathan were sold to Johor Darul Ta'zim for a fee of RM1 million (Malaysian ringgit), while Nazmi Faiz had already signed an agreement to join JDT when he was with Selangor FA last season.

[16] Selangor agreed on a contract extension with import defender Ugo Ukah, keeping him with the club for one more year.

[25][26] On 9 June, before the second transfer window closed, Selangor officially signed a new import player from Spain, Rufino Segovia, to replace Juliano Mineiro, whose contract expired at the end of the month.

Five days later, Selangor faced Terengganu, last season's Super League relegation team, at Selayang Stadium.

The next day, Selangor continued their friendly matches against a club from the FAM league (third division), MOF FC.

In the final matchday of the pre-season, Selangor faced another FAM league club, Petaling Jaya Rangers on the SUK field.

[32] Their next away game, against defending champions Johor Darul Ta'zim, ended goalless as well meaning Selangor were down in eighth place.

[35][36] Three days later, in their fifth match of the league campaign, Selangor recorded a 3–1 home win against Felda United, following three goals from Astafei, Raimi Mohd Noor and Juliano Mineiro ensured the Red Giants side the victory.

The Red Giants won the thrilling encounter 4–2 thanks to goals from Forkey Doe, Rufino Segovia and a double from Syahmi Safari.

The Red Giants came home without victory after a 1–1 draw at Darulaman Stadium, with only one goal each from S. Veenod (Selangor) and Ken Ilsø (Kedah).

[63][64] On 18 July, Selangor played the matchday third of Malaysia Cup campaign against Johor Darul Ta'zim at home.

Goals from Fairuz Abdul Aziz and a brace by Amri Yahyah gave the Red Giants a comfortable 3–2 win.

Selangor played their 17th Super League match at home on 22 July and won 1–0 against Kelantan, with the only goal scored by Amri Yahyah.

On 26 July, Selangor's seven-match unbeaten streak came to an end as they lost to FELDA United 3–1 at Tun Abdul Razak Stadium.

[69][70] Taking on Terengganu at the fourth matchday of the Malaysia Cup campaign, Selangor was able to get a narrow 3–2 victory, with goals from Forkey Doe, Syahmi Safari and Rufino Segovia.

[71][72] With this victory, the Red Giants booked their spot in the quarter final two matchdays before the group stage finished.

[75][76] Despite being defeated by the Red Giants, JDT was crowned Super League champion that night, after their closest rival, Kedah, lost to Pahang 2–1.

[82][83][84] On 20 September, Selangor lost their third game in row after being defeated at home by fierce rival PKNS with a scoreline of 1–2.