Mamelodi Sundowns Born in
Witbank, Tau began his career with
Mamelodi Sundowns in the
Premier Soccer League. He made his professional debut for the club on 25 February 2014 in the league against
Orlando Pirates. He came on as an 85th-minute substitute for
Domingues as Sundowns lost 1–0. Tau then scored his first professional goal for the club during a
Nedbank Cup match on 22 March 2014 against
Golden Arrows. His 90th-minute goal was the fourth and final goal for Sundowns as they won 4–1 against the Arrows. He then scored his first goal in international club competition on 5 April 2015 in a
CAF Champions League match against
TP Mazembe. He scored the Sundown's one and only goal of the match in the 84th minute as Mamelodi Sundowns fell 3–1. After two seasons and rarely appearing for Mamelodi Sundowns, Tau was released in the 2014–15 season. On the advice of then-youth coach Rhulani Mokwena, he was
loaned to
National First Division side
Witbank Spurs instead. He made his debut for the club on 6 February 2016 in a 3–1 win over
African Warriors and went on to score 3 goals in 11 appearances during his loan spell. After a season with Witbank Spurs, Tau rejoined Mamelodi Sundowns and was included in the squad for the club's
CAF Champions League campaign. He featured throughout and played every minute of both legs of a 3–1 aggregate win over Egyptian side
Zamalek in the
CAF Champions League Final. The victory was Sundowns' first ever triumph in a continental competition. He then scored his first goal in the league for the club on 2 November 2016 against
Polokwane City. He scored the first of two goals for the side as they went on to win 2–0. Tau then made his debut for the side in the
FIFA Club World Cup on 11 December 2016 against
Kashima Antlers. Sundowns were knocked-out of the competition after losing to the Japanese side 2–0. During the fifth-place match, Tau scored the only goal for Sundowns as they fell 4–1 to
Jeonbuk Hyundai Motors of South Korea. During the 2017–18 season, Tau scored 11 goals to help Mamelodi Sundowns to the league title. His form throughout the season saw him share the
Lesley Manyathela Golden Boot with
Rodney Ramagalela and earned him the Footballer of the Season and Players' Player of the Season awards. As a result of his achievements, Tau was courted by a number of European clubs during the off-season. Amidst the speculation surrounding his future, he refused to join Sundowns in the pre-season preparations in an attempt to force through a move.
Brighton & Hove Albion On 20 July 2018, Tau signed a four-year contract with English
Premier League club
Brighton & Hove Albion, for an undisclosed transfer fee, On 7 January 2021, he returned to
Brighton & Hove Albion, after being recalled from his loan spell at
Anderlecht.
Loan to Union SG On 15 August, Tau joined
Belgian second division side
Union SG, owned by Brighton chairman
Tony Bloom, on a season-long loan. He was immediately introduced into the first team and played a particularly important role in the
Belgian Cup during the first half of the season, scoring four goals in six appearances to help the club reach the semi-finals after recording historic wins over both
Anderlecht and
Genk. In April 2019, after scoring six goals and recording seven assist to help Union finish the season in second place, Tau was one of three players nominated for the Player of the Season award, alongside teammate
Faïz Selemani. He ultimately won the award and was named in the league's team of the season.
Loan to Club Brugge On 29 July 2019, Tau signed for Belgian side
Club Brugge on loan for the 2019–20 season. He made his debut for the club on 2 August 2019 against
Sint-Truiden where he scored in the club's 6–0 home victory. On 13 August, he was sent off with for a second bookable offence during a 3–3 away draw against
Dynamo Kiev in what was only his second career
Champions League game. Brugge went through 4–3 on aggregate. Tau appeared in the 2–2 away draw at
Real Madrid on 1 October, where he assisted the first goal. The league was ended in May with one remaining match to be played due to
COVID-19. Tau played 18 league matches scoring three as Club Bruges won the title, finishing 15 points clear of 2nd place.
Loan to Anderlecht On 4 August 2020, Tau signed for Belgian club
Anderlecht, on a one-year loan. He made his debut for the club on 16 August 2020, coming on as a substitute in the 64th minute against
Sint-Truiden, and scored his first goal as Anderlecht won the match 3–1.
Return to Brighton On 7 January 2021, Tau was recalled by parent club Brighton, after just four months at
Anderlecht, following the club receiving a Governing Body Endorsement, the new points-based system for non-English players which came into force when the transition period following the UK's exit from the European Union ended, from
the FA for Tau. Three days later he made his league debut for Brighton starting in the 1–0
Premier League loss at
Manchester City. On 15 May, while only making his third Premier League appearance Tau sent in a through ball to
Danny Welbeck who chipped the ball over keeper
Łukasz Fabiański putting
The Seagulls ahead in an eventual 1–1 home draw against
West Ham.
Al Ahly Tau signed a permanent deal for
Egyptian Premier League Al Ahly on 26 August 2021. Tau played in the
2021 CAF Super Cup on 22 December, in which he assisted Al Ahly's goal in the eventual penalty shootout victory. Tau would go on to make 126 appearances for Ahly in all competitions, scoring 30 goals and providing 14 assists.
Qatar SC In January 2025, following three and a half seasons with Al Ahly in Egypt, Tau signed for
Qatar Stars League club
Qatar SC. Qatar SC paid Al Ahly a reported transfer fee of $450,000 for Tau. ==International career==