Andre Schurrle's move to Wolfsburg continues to gather pace as the forward will have a medical at the club on Friday. The 24-year-old has agreed personal terms to return to Germany and is now awaiting for Chelsea to agree a fee to sell him the Bundesliga side. Sportsmail understands that the club are slightly apart on their valuation for the player, but hope to conclude negotiations on Friday. Wolsfburg have offered £21million up front plus add-ons that could see the transfer rise to £27m. Chelsea feel the offer is below their desired fee for Schurrle - who joined for £18m from Bayer Leverkusen in 2013.