[4][5] Penchev also spent a season playing for PFC Hebar Pazardzhik when the team finished on 9th place of A Grupa.
[11] On 15 December it was announced that Petar Penchev's contract has been extended and he will remain manager of Botev Plovdiv until the end of the season.
Under Penchev's guidelines the team achieved a 3-0 home victory against Marek Dupnitsa and 0-2 away win in the derby game versus the local rivals Lokomotiv Plovdiv.
[14][15] Five days later, on 15 March, under Penchev's guidelines Botev Plovdiv achieved an important 2-0 win over CSKA Sofia which qualified the team in top 6 playoffs in A Grupa.
[16] Botev Plovdiv visited Razgrad in the first round of the playoffs and the match against the defending champions Ludogorets ended in a 0-0 draw.
[20] Unexpectedly, on 2 May, Penchev did not include the captain Ivan Tsvetkov in the squad for the game against Ludogorets Razgrad although he was not injured.
[26] Immediately after the game Penchev was released and it was announced that the goalkeeper Mihail Ivanov will no longer play for Botev Plovdiv.