[3] The pair spent two weeks on trial, meeting first-team stars such as Phil Neville, Roy Keane and Ole Gunnar Solskjaer as well as manager Sir Alex Ferguson.
"[7] Seven months after the trial with Manchester United, Nkausu left Zambia for South African National First Division club Pretoria University, with the transfer being completed on 6 October 2003.
Davies played fewer games still in 2007–08, making seventeen appearances as Pretoria slumped to a seventh-placed finish in the newly implemented Inland Stream.
[11] The decrease in Pretoria's fortunes caused Nkausu to move to SuperSport United, who had just won the Premier Soccer League (PSL) and were therefore considered one of the best teams in South Africa.
[13] Nkausu only made three appearances the following season, playing in SuperSport's victories over Free State Stars and Santos as well as the 3–0 loss to AmaZulu in March 2010.
Part of the reason for this lack of playing time was the problem of Nkausu's South African residence permit, which he became eligible for in 2010 having spent five years in the country.
In September 2010, despite agreeing a two–year contract with SuperSport, the club decided to wait until Nkausu's permit was granted until registering him, due to the PSL's limit on foreign players.
[26] On 19 August 2012 Nkausu played in SuperSport's 0–0 draw with Orlando Pirates in the first leg of their MTN 8 semi-final, making an important block to deny Siyabonga Sangweni in the closing stages.
[29][30] An injury sustained in November limited Nkausu's playing time towards the end of 2012, and he missed further league games through his involvement in the 2013 Africa Cup of Nations.
[33] In July 2013, Nkausu was denied the chance to feature in SuperSport's friendly against English giants Manchester City – Manuel Pellegrini's first game in charge of the Citizens – due to injury.
Nkausu also played the whole of the 3–0 quarter–final win over Sudan on 4 February 2012, helping Zambia book a semi–final showdown with tournament favourites Ghana, who coach Herve Renard described as "the best team in Africa".
[52] Some sections of the media criticised Herve Renard for being overly harsh on Nkausu; the manager shoved the defender during the match after he suffered a lapse in concentration and allowed Gervinho to bear down on goal.
[58] Despite having played 90 minutes for SuperSport just three days earlier, Nkausu was part of the Zambian squad that travelled to Seoul on 13 August 2012 for a friendly against South Korea, a match that also acted as a warm-up game for a 2013 African Cup of Nations qualifier against Uganda in September.
[59][60] One of only six 2012 ACON-winning players in the squad for the friendly, Nkausu started the game against South Korea on the bench but replaced fellow full-back Joseph Musonda just 28 minutes into the match.
[61] Nkausu played the entirety of Zambia's 1–0 first-leg victory over Uganda on 8 September 2012, assisting Christopher Katongo's winning goal with a long throw-in.
[63][64] Nkausu's next international appearance came on 14 November in a 1–0 win over South Africa in the Nelson Mandela Challenge, being replaced early in the second half by Emmanuel Mbola.
[65][66] Despite missing warm-up friendlies against Saudi Arabia and Tanzania through injury, on 24 December 2012 Nkausu was selected for Zambia's 26-man squad for the 2013 Africa Cup of Nations the following month.
[70] Four days later he started in the 1–1 draw against Nigeria; Nkausu conceded a penalty for a foul on Ahmed Musa in the first half, but the resulting spot-kick was missed by Mikel John Obi.
[73] On 5 June, he partnered Kondwani Mtongo in the heart of Zambia's defence in an experimental backline for the 2–1 behind-closed-doors win over local club Nkwazi FC.
[86] After a strong performance in the 2012 African Cup of Nations final, Nkausu was described as having "showed composure" and having a "big match temperament" that allowed him to cope with the pressure of such an important game.
[90] It has also been suggested that the defender is "error–prone", contributing to SuperSport United's "suspect defence", although The Post have since countered this view, describing the player as "a consistent member of Chipolopolo".
[91][92] Some commentators have criticised Nkausu's attacking play, noting that during the 2012 African Cup of Nations the player "booted the ball upfield too much, which conceded possession cheaply.