Iliya Hristov Gruev (Bulgarian: Илия Христов Груев; born 30 October 1969) is a Bulgarian retired professional footballer. Until 2022 he was assistant manager at Arminia Bielefeld.
After MSV Duisburg's bad results and following the release of their manager Gino Lettieri, Gruev was announced as the new manager of the team, signing a contract until 2017, becoming a first team manager for the first time.[2][3] In the 2016–17 season, Duisburg won the 3. Liga and got promoted to the 2. Bundesliga.
Gruev was sacked on 1 October 2018 after the team scored only two points out of the first eight matches.[4]Torsten Lieberknecht became the new head coach.
Werder Bremen
In summer 2019, Gruev joined Werder Bremen as an assistant coach with a focus on set pieces.[5]