Petar Grbić

Mogren

In 2008, Grbić joined FK Mogren from Budva. At the time of Grbić's arrival, Mogren was coached by Branislav "Brano" Milačić and players from the Montenegrin national team including Radoslav Batak, Ivan Janjušević, Janko Simović, Marko Ćetković, and Draško Božović. Grbić was a member of the Mogren squads which won the Montenegrin First League in 2009 and 2011.

Olympiacos

In July 2011, Greek side Olympiacos earned Grbić's signature in a €1 million transfer from Mogren. During the team's summer camp that year, coach Ernesto Valverde only employed Grbić as a substitute, preferring the likes of Kevin Mirallas. He spent the rest of his time at Olympiacos on loan, first to Levadiakos, followed by Hapoel Be'er Sheva, OFK Beograd, and finally to Partizan.

Loan to OFK Beograd

On 5 September 2012 it was announced that Grbić joined OFK Beograd in a six-month loan. On 11 November 2012 Grbić scored the winning goal in a match against Red Star Belgrade; it was OFK Beograd's first win over Red Star since 2003. Less than two weeks later, Grbić scored a brace against Red Star in the 2012–13 Serbian Cup quarter finals. After a great half-season with the Serbian team, the loan deal was extended to June 2013.

Partizan

On 13 July 2013 Grbić joined Partizan on loan from Olympiacos. In January 2014, Olympiacos officially traded Grbić to Partizan in an exchange for Marko Šćepović. On 18 March 2015 Grbić scored the opening goal in the 2015 Serbian Cup…

Grbić made his debut for Montenegro in a March 2011 friendly match against Uzbekistan and has earned a total of 7 caps, scoring no goals. His final international was a March 2016 friendly against Belarus.

Mogren Montenegrin First League: 2008–09, 2010–11 Partizan Serbian SuperLiga: 2014–15 Budućnost Podgorica Montenegrin First League: 2019–20, 2020–21, 2022–23, 2024–25 Montenegrin Cup: 2020–21