Uilson de Souza Paula Júnior (born 27 April 1989), commonly known as Júnior Caiçara, is a Brazilian footballer who plays as a full-back for Süper Lig side İstanbul Başakşehir. Career Santo André and loans Caiçara's first professional club is Santo André. In 2009, after making his senior debut with their B-team in the previous year's Copa Paulista, he was loaned out to Brazilian team CSA. Back to Santo André in May 2009, Júnior Caiçara made his Série A debut on 16 May, starting and being sent off in a 4–2 away win over Coritiba. In 2010, he was sent on loan to América-SP, where he featured in four Campeonato Paulista Série A2 matches before being released on 10 February. In June 2010, Caiçara goes to Portugal team Gil Vicente again on loan from Santo André. He made his debut on 29 August against Trofense in the second Portugal league. He helped his team to gain promotion in the Primeira Liga and played with the team in their return in Primeira Liga. Ludogorets Razgrad After playing two seasons for Gil Vicente in Portugal, Júnior Caiçara joined Bulgarian side Ludogorets Razgrad on 5 June 2012. He signed a three-year contract and was given the number 80 jersey. On 11 July, Caiçara marked his debut for Ludogorets with a goal and first trophy. He opened the scoring in the 2012 Bulgarian Supercup against Lokomotiv Plovdiv, the match ended 3–1 to Ludogorets. On 18 July, he made his European debut against Dinamo Zagreb in the second qualifying round of the Champions League. Then he made his Bulgarian A Group debut, playing full 90 minutes in a 3–0 away win over Cherno More Varna on 11 August. Caiçara quickly established himself as Ludogorets's first choice right-back, making 28 league appearances during his debut campaign in Bulgaria. He collected his first A group title winner's medal at the end of the 2012–13 season. On 21 August 2013, Caiçara was sent off against Basel in a 4–2 home defeat in the play-off round of the Champions League, his first red card in a Ludogorets shirt. On 12 December 2014, Ludogorets announced that Caiçara had extended his contract with a new two-year deal that will keep him at the club until 2017. Schalke 04 On 25 June 2015, Caiçara signed with German club Schalke 04 on a three-year deal for a fee of €4.5 million. He made his