In June 2014, Marin was recalled by his parent club after spending 1+1⁄2 years with Rakovski and making 34 league appearances.

On 7 December 2014, Marin was included in the starting lineup as a left defender during a 2–0 win over PFC Haskovo.

[4] On 15 March 2015, Marin participated in the final 30 minutes during a 2–0 home win of Botev Plovdiv over CSKA Sofia.

[7] On 3 May 2015, Marin came on a substitute and made an assist for the goal of Tomáš Jirsák during the 3–1 defeat from Ludogorets Razgrad.

[8] Soon after Petar Penchev decided to start using Lazar Marin in more attacking role he scored his first goal in A grupa.

[9] A week later, on 23 May, Marin scored again but this time Botev Plovdiv lost with 2–1 the away game versus Beroe Stara Zagora.