The 29-year-old joins the 2015 ISL champions on a free transfer after the expiry of his contract at Bahrain outfit Al Muharraq.
A product of the AZ Alkmaar youth system, Nelson represented Netherlands at U-17, U-18 and U-19 levels.
Having made his professional debut at the age of 18 for Alkmaar in the Dutch Eredivise, Nelson was then loaned to RBC Roosendaal in the Dutch Eerste Divisie.
After one season, Nelson's loan move at Roosendaal became permanent. He then joined Bulgarian giants CSKA Sofia where he spent 18 months, played in the UEFA Europa League and won the Bulgarian domestic cup.
Nelson returned to the Bulgarian top division in 2015 when he joined Botev Plovdiv and spent one season there, scoring four goals in 14 domestic league starts.
In January 2017, Nelson signed for Bahrain powerhouse Al Muharraq and finished runners-up in the Bahrain King's Cup. Nelson scored on his AFC Cup debut for Muharraq and featured in all six of their group stage games.
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