[6] After hearing about interest from Juventus, Pantić told Večernje novosti that he wished to extend his contract with Partizan before leaving Serbia.

[7] On 13 July 2015 Pantić signed for Chelsea for a reported fee of £1.25 million, on a four-year deal and was immediately loaned out to Eredivisie side Vitesse Arnhem.

[8] He made his Vitesse debut 17 days later in a UEFA Europa League third qualifying round first leg against Southampton at St. Mary's, replacing Valeri Kazaishvili for the final 23 minutes of a 3–0 defeat.

[10] On 3 March 2016, after being supposedly 'frozen' out of the Vitesse starting eleven, Pantić stated his passion for a return to London: "I want to come back to Chelsea, just to train.

[12] On 17 September 2016, Pantić made his debut against Willem II off the bench coming on after half-time as Excelsior went on to score a late goal to earn a 1–1 draw.

[15] On 22 July 2017, Pantić scored a goal against Mačva Šabac in first fixture of the 2017–18 Serbian SuperLiga season in a 6–1 home league win.

[16] On 5 November, Pantić entered in a game as a substitute for Marko Janković in the 72nd minute and with two assists help club to reach a 3–1 away victory over Mačva.