Chelsea have sent scouts to watch French U-21 playmaker Giannelli Imbula on a number of occasions, according to the Mirror.
It appears, then, that Blues boss Jose Mourinho is extremely interested in the talented 22-year-old, and could yet make a swoop for him in the near future.
It's not surprising that the Premier League leaders are keeping a close eye on the Belgium-born ace, as the player looks set for a bright future in the game. Since signing for Marseille from Guingamp in 2013, he's proved his credentials in Ligue 1, but still appears to be learning the game.
£25m is without a doubt a high price for the player's services, but he could prove a fine long term investment for Mourinho and Co. at Stamford Bridge. A fine passer of the ball and strong in the midfield, he's able to get up and down the pitch, and help create goals for his teammates.
Chelsea, of course, already have an array of talent in the midfield department, with the likes of Nemanja Matic, Cesc Fabregas, Ramires and Co. all plying their trade for the club.
The Blues have looked strong in the midfield area this season, with Matic holding things together in the middle of the park, whilst Fabregas has been key for the Blues in the attacking area of the pitch as he's combined with hit-man Diego Costa on a number of occasions already this term.
It remains to be seen as to whether Chelsea will look to add Guingamp to their club in the January transfer window or make a move for him next summer.
Chelsea's immediate attention, however, turn to their Champions League clash with
Maribor at Stamford Bridge this evening as they look to maintain their unbeaten start to the season. The Blues have in fact won their last four in all competitions, so will be hoping to continue their momentum ahead of their trip to Old Trafford on Sunday.