Brazil

Covolan spent his early career in his native Brazil with Trieste. He was scouted by Vasco da Gama and signed a professional contract at Vasco at the age of 17 after impressing on a two-week trial.^[6] He acted as the practice goalkeeper for Juninho Pernambucano's free kick training sessions, later recalling that such was the player's ability that "I was basically just a cone".^[7] He returned from Rio de Janeiro after three years to sign with boyhood club Atlético Paranaense.^[6] He later recalled that Atlético had eight goalkeepers on their books and that he realised halfway into his three-year contract that he would never play a first-team game for the club.^[8] He tried to gain experience of senior football by leaving on loan, but was injured in a warm-up exercise and sidelined for four months.^[6]

Covolan went on to feature in four match day squads as an unused substitute for Esportivo Bento Gonçalves, before joining Toledo in December 2013^[9][8][10] and then Rio Branco in March 2014.^[11] He helped Rio Branco to win the Campeonato Acreano (Acre state league) in 2014 following a penalty shoot-out victory over Atlético Acreano,^[1][8][12] but was one of the three players released by the club on 7 May 2014.^[13]

Spain

Covolan moved to Spain later in 2014 and joined Tercera División team Atlético Rafal. He switched to fellow Mallorcan side Alaró the next year, making 35 appearances. He left the club following the death of head coach Julián Ronda.^[7] He spent three months on trial at Mallorca, but was deemed to be too old at the age of 24.^[6]

English non-League

In 2016, he was approached by an agent to play for English National League South club Whitehawk, who were managed by the Argentinian Pablo Asensio.^[8][14] He made 23 league appearances for Whitehawk,^[1] and also spent a month on loan with Lewes,^[15] before signing for Isthmian League Premier Division side Worthing after a pre-season trial.^[9] He was named Supporters Player of the Year by Worthing's "Away Boys Fanatics" in the 2017–18 season and had trials at Aldershot Town, Luton Town and Stevenage.^[10][16] He broke his arm during a win at Moneyfields in the FA Cup on 6 October 2018.^[17][18]

Torquay United

He moved to Torquay United in May 2019 after impressing manager Gary Johnson on trial.^[19][20][3] He competed with Shaun MacDonald for a place in the first-team, but had to wait for his opportunity after picking up an injury in pre-season, making his first-team debut in a 2–1 win at Dover Athletic on 17 August.^[3] Covolan would play 25 league games in the 2019–20 season, with MacDonald playing the remaining 11 league matches in a season that was cut short due to the COVID-19 pandemic.^[1][21][22] He featured 26 times in the 2020–21 campaign, whilst MacDonald played 19 league games, as Torquay qualified for the play-offs with a second-place finish.^[1][21] On 20 June 2021, he scored an injury-time equaliser against Hartlepool United in the National League play-off final, which Torquay eventually lost on penalties, despite two saves from Covolan.^[23] His goal earned him comparisons to compatriot Alisson, a goalkeeper who had scored a headed goal for Liverpool earlier in the year; the pair had actually played against each other some years earlier in a tournament for under-23 players when Atlético Paranaense came up against Internacional.^[24]

Port Vale

On 23 June 2021, he signed a two-year contract with League Two side Port Vale; manager Darrell Clarke said that "he is hungry to prove he’s a league-level player and we feel he has all the attributes to succeed at this level".^[25][26] However, the move would turn out to be the "lowest point" of his career as he struggled to handle the pressure of league football and suffered with depression as a result.^[7] Having already been shown a red card in a pre-season friendly, he was sent off on his English Football League debut after rushing off his goal-line to trip Nicke Kabamba during a 1–0 defeat at Northampton Town on 7 August.^[27][28] He returned after a serving a one match suspension and kept four clean sheets in his next seven games, saying that "you learn from every mistake and that is what makes you stronger".^[29] He was criticised by Clarke for an error during a win over Barrow on 16 October, but responded by saving a penalty in a 1–1 draw with Mansfield Town three days later.^[30] On 15 January 2022, he was sent off for kicking out at Swindon Town's Harry McKirdy after the pair jumped for a high ball moments before half-time during what would finish as a 3–1 home defeat; a furious Clarke said after the match that "he has got to learn from that otherwise he won’t be staying at the club for very long".^[31] Covolan, who was suspended for four games for the incident, was supported by captain Tom Conlon, who said "he's one of us, he is a big part of the squad, the boys love him to bits".^[32] He was an unused substitute as Vale secured promotion out of the play-offs with victory over Mansfield Town in the final at Wembley Stadium.^[33] He played 22 games in the 2021–22 season, keeping seven clean sheets.^[34] David Flitcroft, the club's director of football, confirmed that the player's contract would not be renewed beyond June 2023.^[35]

Maidstone United

On 4 August 2023, with less than 24-hours until the start of the 2023–24 season, Covolan signed with newly-relegated National League South club Maidstone United.^[42] Maidstone defeated EFL clubs Barrow and Stevenage to reach the fourth round of the FA Cup, where they then knocked out Championship side Ipswich Town 2–1 at Portman Road, with Covolan named as man of the match having made a "string of saves" to help pull off the upset.^[43] He played every league game as Maidstone finished the 2023–24 season in fourth place, qualifying for the play-offs.^[1] His teammates voted him as Players' Player of the Year.^[44]