The International Champions Cup is being played by top football clubs across the world during the pre-season.
The British-born Indian origin player revealed his ambitions of playing for India.
Manchester United face Reading in the FA Cup clash on Tuesday.
The Singapore international had a two-year stint with Thai side Army United.
The Protectors announced the signing of Hassan in their Facebook page on Friday.
The Lions midfielder still has a year left in his contract with Tampines Rovers.
Tottenham Hotspur face Chelsea in the Premier League clash on Wednesday.
AFC Bournemouth face Arsenal in the Premier League clash on Tuesday.
Sturridge and Milner picked up knocks in Liverpool's 2-2 draw against Sunderland.
Dzoni had attended a 10-day trial with Manchester City in 2011.
Singh has set his sights on breaking his way into the India's national team.
Hougang were also keen on signing Amri from Garena Young Lions.
Manchester City face Burnley in the Premier League clash on Monday.
Sunderland face Liverpool in the Premier League clash on Monday.
Arsene Wenger labelled the Frenchman's goal as "work of art".