Watch: £30m Chelsea target scores again for team that has 29 percent chance of drawing Blues in Champions League Last 16
Besiktas were held to a 1-1 draw on the road against a 10 man Kayserispor on Sunday in the Super Lig.
The Black Eagles have now drawn their last three games following a Champions League clash.
Kayserispor took the lead just after the half an hour mark but Besiktas equalised from a penalty just before the half-time whistle.
Star striker Cenk Tosun ended up converting his 12th goal of the season.
The Turkish international has attracted widespread interest on the back of his impressive form.
Chelsea became the latest side to scout the 26-year-old as confirmed by club general secretary Ahmet Urkmezgil.
GOL! Right on the buzzer! Cenk Tosun with his 12th goal of the season for Beşiktaş. Easily worth €150m EASILY pic.twitter.com/6TpLxrggLZ
— Turkish Football (@Turkish_Futbol1) 10 December 2017
Urkmezgil was quoted by Turkish-Football as saying: “Cenk has come so far, he is a great player who has reached the highest level.
“Chelsea sent club officials and a scouting team to watch him during the derby.”
The Blues have a 29 percent of drawing Besiktas in the Champions League Last 16.
Tosun has four goals and two assists in the competition.
Besiktas value the striker as being worth £30 million, Tosun has another two-years remaining on his current contract.