Emiliano Martinez has changed his Chelsea shirt number already despite getting John Terry’s approval to wear the number 26.The Argentine completed a late transfer to Stamford Bridge from Aston Villa and claimed Terry’s iconic number, which he wore on his debut against Brighton last Sunday.Martinez donned the iconic Chelsea number for his debut against BrightonGettyNow, with Robert Sanchez gone, the number one is free, and he’s grabbed it.However, the Blues aren’t offering to change any shirts already bought.But Martinez is offering to personally sign any of them in a warm gesture from the Argentine number one.Emi Martinez changes Chelsea shirt numberIn a statement on the club’s website, Chelsea said: “Emiliano Martinez has switched to the No.1 shirt for Chelsea.“Our summer signing originally took the No.26 shirt for the Blues and wore it in our 4-3 victory over Brighton & Hove Albion at Stamford Bridge.“However, due to Robert Sanchez’s loan move to Como, the No.1 shirt has since become vacant, and our Argentinian international has opted to take that number.“In recognition of the change, and those impacted, Emi has kindly offered to sign all “Martinez 26” shirts that had been obtained via the official Club Megastore or official Club website.“In order to arrange this, supporters will be required to bring this shirt to Stamford Bridge along with proof of purchase by October 4.“The 2026/27 Nike home shirt is now on sale to fans with early access via our Megastore at Stamford Bridge and our online store.”Martinez has made a unique gesture to Chelsea fans after changing to the No.1GettyJohn Terry’s approvalMartinez has joined the Blues from Villa in a £7.5million deal after a very successful spell in the Midlands.He was part of the team that won the Europa League last year and also represented the Villans in the Champions League.But after another poor display from Sanchez in the 3-2 win over Fulham, Chelsea decided that it was time for a new goalkeeper.Martinez is in and made several saves as the Blues scraped past Brighton at the weekend 4-3.And during his unveiling, the 34-year-old said he and Terry had a conversation in which the former Chelsea captain gave his blessing to wear the number 26.Martinez offers an immediate upgrade on SanchezGettyThe number 26 is synonymous with TerryHe said: “I remember using the 26 on loan a few times with previous clubs, and of course I knew John Terry famously had the 26 here.“John was someone I spoke to before I joined, and he said he was over the moon to have me here. “From our time together at Aston Villa, he knows how hard I work and what I can bring to Chelsea. “The morning I signed, I texted him and said, ‘I’m wearing your shirt, and I’m going to do it with pride’.”Martinez did wear it with pride for one game, and he has switched to the traditional number one for a first-choice goalkeeper.He will hope to get one over former club Arsenal this weekend as the Blues head across London to the Emirates to take on the Gunners in an early-season belter.