the final few minutes of Celtic's 3–0 league win over Inverness CT at Celtic Park. He was given his first starting appearance on 2 March in a league match at home against Dundee. Celtic could only draw 0–0, but Roberts was noted to have looked "sharp" and showed "flashes of his talent". On 2 April 2016, Roberts scored his first competitive club goal, netting a brace for Celtic in a 3–1 come-from-behind win over Hearts. Following an impressive run of form during which he netted three goals, Roberts was named Scottish Player of the Month for April. He scored another brace on 8 May in a 3–2 win over Aberdeen, in the process helping Celtic clinch the Scottish Premiership title. Roberts scored another goal on the final day of the season in a 7–0 drubbing of Motherwell, thereby ending the campaign with 7 goals in 12 appearances for Celtic. Roberts made his first ever Champions League appearance on 20 July 2016, starting and scoring in a 3–0 win over Lincoln Red Imps. He had previously rejected the opportunity to represent England at the U19 European Championship in order to help Celtic progress to the Champions League proper. On 6 December 2016, Roberts scored an impressive solo goal and was named man of the match in a Champions League match against his parent club Manchester City. He finished the 2016–17 season with 43 appearances and 15 goals, helping Celtic to complete an unbeaten domestic season, in which the club secured its sixth consecutive league title. On 28 August 2017, it was announced that Roberts had rejoined Celtic on a new season-long loan. In November, during a match against Motherwell, Roberts suffered a hamstring injury and was sidelined for a number of months. He made his return against the same opposition on 18 March 2018 when he came on a substitute for James Forrest in a 0–0 draw. Loan to Girona Roberts joined Manchester City's Spanish partner club Girona for the 2018–19 season, with Manchester City saying that the ideal next stage in Robert's development would be testing himself in La Liga, one of the world's most technical leagues. At the time of signing he was the only English player playing in the Spanish top flight and he made his debut the following day as a substitute against Real Valladolid. He endured a difficult campaign, however, and failed to score in 19