[2] Ikhsan would move to the Young Lions in 2017, before signing for Norwegian clubs Raufoss IL and FK Jerv, respectively, netting a total of 16 goals in all competitions.

Ikhsan currently holds the record of netting the fastest four goals scored by a player in the Thai League history in eleven minutes against PT Prachuap on 5 April 2022.

[8][10] In March 2013, Ikhsan and older brother Irfan Fandi had an opportunity to secure their first overseas trial, with Hércules, a professional club playing in the Spanish second division.

In total, Ikhsan played 10 league games for the Young Lions while serving his national service as an infantry trooper.

[17] Following the conclusion of the season, it was reported that Ikhsan, along with brother Irfan, is set for a trial with English club Leeds United in March, after the end of his national service.

However, due to the COVID-19 pandemic, Start played only one match — a 2–0 win over fellow Norwegian side Grorud IL — and Ikhsan scored during his 75-minute outing against the newly promoted second-tier outfit.

[24][25] The move to the IK Start eventually failed to materialise after the club and player could not agree on salary terms and contract length.

Ikhsan latched on to a cut-back from Willis Furtado, and finishing past Igor Spiridonov from close range, to equalise for his club against Bryne FK.

He then helped to set up his club's winner, in the second minute of added time, playing a one-two with Thomas Zernichow, who later back-heeled for John Olav Norheim to make it 2–1.

Such rumours turned out to be true when on 22 December 2021, Thai League 1 champions BG Pathum United announced on their Instagram account that Ikhsan has transferred to the club during the middle of their 2021–22 season, on a two-and-a-half-year contract.

[47] On 19 August 2022, Ikhsan, along with his brother Irfan, became the first Singaporeans to reach the AFC Champions League's quarter-finals after their club defeated Hong Kong's Kitchee SC 4–0.

On 1 June 2024, Ikhsan signed a 3 years contract extension with BG Pathum United after amassing 37 goals in 67 matches in 2½ seasons.

2024–25 season After being injured for nearly five months, Ikhsan returned to action coming on as a substitution in the 74th minute for Raniel in a 1–0 lost against Nakhon Ratchasima on 24 November.

He was called up to the Singapore U22 ahead of the 2017 SEA Games and broke his duck by converting a penalty against India before hitting two scorchers from distance in a 4–1 thumping of Brunei in the AFC U-23 Asian Cup qualifiers in July.

[50] Ikhsan was called up to the national team for the friendly against Hong Kong and the 2019 AFC Asian Cup qualifiers against Turkmenistan on 31 August and 5 September respectively.

[56] He notched his eighth goal for Singapore in only his eighteenth cap when he scored in a 2–1 win over Yemen in a 2022 FIFA World Cup qualification match.

[57][8] Ikhsan received a call up to the national team for a friendly against Afghanistan and the 2022 FIFA World Cup qualification matches held in Riyadh against Palestine, Uzbekistan, and Saudi Arabia along with brothers, Irfan and Ilhan.

This was the first time all three brothers of were called up[58] but due to a knee injury he sustained during pre season, Ikhsan ended up withdrawing from the national team with no further replacements.

On 25 December 2021, in the second leg of the 2020 AFF Championship semi-final match against Indonesia, Ikhsan played in goal in the 119th minute after goalkeeper Hassan Sunny was sent off.

Ikhsan saved a free kick and did not concede as the match ended 4–2 after extra time where he also gain nationwide famed for his heroic performance playing as a goalkeeper.

[62] Ikhsan scored his first international hat-trick on 14 June 2022, helping Singapore to a 6–2 win over Myanmar in the final match of their 2023 AFC Asian Cup third-round qualifiers.

[64] Ikhsan missed out on the 2022 AFF Championship tournament as he suffered a serious knee injuries in a friendly match against Maldives on 17 December 2022 at the Jalan Besar Stadium.

On 21 November 2023, Ikhsan returned to football action after suffering a long term injury in December 2022 coming on as a substitution during the 2026 FIFA World Cup qualification against Thailand.

During his stint, he had continued to play and train professional football under the SAF Sportsmen Scheme by the Ministry of Defence (MINDEF) that gives special dispensation for local athletes with flexible timetables for sports events – including representing Singapore at international competitions.