Background
His father played in the Hungarian first league at Tatabanya Football Club.
His father played in the Hungarian first league at Tatabanya Football Club.
Finished his career at Herzelya in 2000, playing for them 18 months.
Started his career at Videoton Football Club young team (1981) and became professional player 1986. Played for European Theatre of Operations Football Club GYOR (1988–1989) as loan player meanwhile he served his army duty at Gyor. Returned to Videoton and became the captain and the leader in his home team
End of the year of 1994 he accepted the offer from Beitar Jerusalem.
At Beitar Jerusalem F.C. he was known as "Stefan" as the people there had a lot of difficulty in pronouncing the name "István". Played five beautiful years for Beitar and became one of the most favorite foreign player ever played for them.
Although he played behind the striker role, he became the best scorer in Beitar in those years and still he is the best Israeli scorer in European competitions with 12 goals. After his football career, he worked as the technical director of the National Team for Hungarian Football Federation.
He left the federation and became the club manager (Chief Executive Officer) of SIÓFOK Football Club 2002-2004.
They promoted to first league in the first year and finished 5th position in top league next season. Although the successful seasons, the club got into financial crisis when the owner couldn"t finances the club anymore. Sallói made a new business plan, releasing the expensive players and build a young team with a young coach, Aurel Csertoi.
They finished the first part of the league in first place causing big surprise for everyone.
Seeing his success with small club, Újpest Football Club, one of the biggest and most popular team in Hungary, offered him the Chief Executive Officer position in winter break and he took the job. Újpest Football Club started the second part of the league in 8th position without head coach who resigned in winter break.
Sallói again, give the job to a young coach, Geza Meszoly who made excellent job with his team, winning the second part of the league and finished the 2nd place in the table at the end of the season. In 2005, when new owner arrived to the club, Sallói resigned.
He moved to Diósgyőr Football Club to a very popular team which was year by year in financial crisis.
Foreign that time Sallói was called in Hungary "man who can manage the financial crisis". He did the job again, stabilized the club and madeDiósgyőr Football Club a stable mid table team End of 2007, the new owner of Ujpest Football Club called him back to Újpest Football Club as a sport director
Újpest Football Club finished in 2nd place after a year and made over 1 million euros profit on transfer fees.
End of 2009, he joined to Wolverhampton Wanderers Football Club as an Eastern Europe scout. 2011 Sallói returned to Hungarian football and took a job in Kecskeméti TE as sport director until 2015.
From july of 2015 after Kecskemeti TE lost the licenc for the Hungarian professional leagues, he signed for Dunaujvaros PASE as the sport director Teams Individual.