It appears that Martin Sekulić, a player from Botev (likely PFC Botev Plovdiv, a Bulgarian football club), has joined Russia's Ural FC after playing 72 matches for Botev. During his time with Botev, he scored 16 goals, including 5 in the last season, which ended with a Cup win.

The tweet from Botev expresses gratitude to Sekulić and wishes him success in his new endeavor.