Manchester United fans have expressed delight on social media after transfer expert Fabrizio Romano confirmed that the club have reached an agreement with Ajax for defender Lisandro Martinez.The Red Devils are close to completing the signing of Martinez for a fee of around £46 million (€55 million). The Argentina international is expected to pen a five-year contract that will keep him at Old Trafford until the summer of 2027.It is understood that Arsenal and United were in the race for Martinez. However, the Red Devils beat their Premier League rivals as Martinez gets ready for a reunion with his former Ajax manager Erik ten Hag.Fabrizio Romano@FabrizioRomanoLisandro Martínez to Manchester United, here we go! Full agreement in place between Man United and Ajax for package up to €55m. Lisandro will sign until 2027, documents now approved. #MUFCDeal done - meeting in Amsterday on Wednesday was the key step. Ten Hag, big factor.384179263Lisandro Martínez to Manchester United, here we go! Full agreement in place between Man United and Ajax for package up to €55m. Lisandro will sign until 2027, documents now approved. 🚨🔴 #MUFCDeal done - meeting in Amsterday on Wednesday was the key step. Ten Hag, big factor. https://t.co/qyYskmgNMUUnited fans on Twitter are understandably pleased with Romano's latest update. Some believe the Argentine defender could be even better than Liverpool's Virgil van Dijk and could lead their team to glory.Here are a few tweets:Trey@UTDTrey@FabrizioRomano VAN DIJK COME OUTSIDEEEEEE133369@FabrizioRomano VAN DIJK COME OUTSIDEEEEEEPrunopenandes@Prunopenandes1@FabrizioRomano We’re winning it all next season8@FabrizioRomano We’re winning it all next season🔴⚪️⚫️@SAF_Football@FabrizioRomano HERE WE GOOOOOO5@FabrizioRomano HERE WE GOOOOOO https://t.co/z09yar79veA Legacy Fan 🔴⚪️⚫️@TffUTD@FabrizioRomano twitter.com/tffutd/status/…A Legacy Fan 🔴⚪️⚫️@TffUTDThink Keano’s song suits our new signing Lisandro's fkn magicHe wears the magic hatand when he saw Old Traffordhe said I fancy thatHe didn’t sign for ArsenalCoz they're fkn shitehe signed for Man Utdcoz we're fkn dynamite! 🧨Oh and new artwork too #MUFC2Think Keano’s song suits our new signing 😁Lisandro's fkn magicHe wears the magic hatand when he saw Old Traffordhe said I fancy thatHe didn’t sign for ArsenalCoz they're fkn shitehe signed for Man Utdcoz we're fkn dynamite! 🧨Oh and new artwork too 😉#MUFC https://t.co/SXyabupKsj@FabrizioRomano twitter.com/tffutd/status/…Abhinav Tripathy🇮🇳🚩@AbhinavAT_07@FabrizioRomano He has this ability to play long balls and we know Ronaldo does in behinds. So I can already see Ronaldo scoring 30+ goals in 2022-23 calender year.Plus he is a solid defender and can play as CDM. Win win for both parties. First Eriksen, now Lisandro. Just waiting for FdJ@FabrizioRomano He has this ability to play long balls and we know Ronaldo does in behinds. So I can already see Ronaldo scoring 30+ goals in 2022-23 calender year.Plus he is a solid defender and can play as CDM. Win win for both parties. First Eriksen, now Lisandro. Just waiting for FdJ🔥Eseosa 🔰@Eseosa_Bighead@FabrizioRomano Malacia doneMartinez doneEriksen almost doneFDJ almost done7/10 if you ask me about this transfer market.Maybe we can get serious again.2@FabrizioRomano Malacia doneMartinez doneEriksen almost doneFDJ almost done7/10 if you ask me about this transfer market.Maybe we can get serious again.‏ً@mackutdd@FabrizioRomano HE COULD’VE GONE TO ARSENAL, BUT HE SAID NO FUCK THAT101@FabrizioRomano HE COULD’VE GONE TO ARSENAL, BUT HE SAID NO FUCK THATً@TheFergusonWay@FabrizioRomano FINALLY..3138@FabrizioRomano FINALLY.. https://t.co/cPrPK4GcHrDr. Varies The Four-Eyed©️@DrVaries@FabrizioRomano Martinez rejected Arsenal just to be with Manchester United. Big club thing 1@FabrizioRomano Martinez rejected Arsenal just to be with Manchester United. Big club thing 🔴Yagi@YagiSZN@FabrizioRomano Better then Van Dijk17@FabrizioRomano Better then Van DijkMartinez could be an excellent addition to the United squad ahead of the new season. The 24-year-old would provide competition in defense to the likes of Harry Maguire and Victor Lindelof. Martinez can also play as a defensive midfielder, a position United need strengthening.The Argentine suffered a muscle injury towards the end of last season with Ajax, managing only 37 appearances across competitions. However, helped the Amsterdam giants keep a whopping 22 clean sheets in those games. Lisandro Martinez set to become second Eredivisie signing for Manchester United this summerLisandro Martinez is set to become the second player United will sign from Eredivisie this summer. The Red Devils have already brought in left-back Tyrell Malacia from Feyenoord.The 22-year-old Dutch international will provide competition to Luke Shaw and Alex Telles. Malacia recently made his Manchester United debut against Liverpool in a pre-season friendly in Bangkok, which United won 4-0.United Update@UnitedsUpdateMalacia vs Liverpool #MUFC42418Malacia vs Liverpool 😍 #MUFC https://t.co/4HIMtWKNHpManchester United are still in the market for new signings as Ten Hag looks to strengthen their squad ahead of the new season. According to Fabrizio Romano, Danish star Christian Eriksen is close to completing his free transfer to Old Trafford.The Red Devils have agreed to a transfer deal worth €85 million with Barcelona for midfielder Frenkie de Jong but are yet to agree personal terms (as per Romano).