Rival fans have mocked Manchester United after the club confirmed that they agreed a deal with Ajax for the transfer of Lisandro Martinez.The 24-year-old defender is set to be reunited with former boss Erik ten Hag after spending three extremely successful seasons at the Dutch giants, where he played 120 times.Manchester United@ManUtdAn agreement has been reached for the transfer of Lisandro Martinez #MUFC || @LisandrMartinez6146314250An agreement has been reached for the transfer of Lisandro Martinez 🔴🇦🇷#MUFC || @LisandrMartinezTransfer expert Fabrizio Romano has claimed that the highly-rated Argentina international will cost the Red Devils an initial €55 million, which could rise to €67 million. He is particularly known for his outstanding ability and confidence to play out from the back.Martinez will become Manchester United's third signing under Ten Hag after the club picked up Feyenood left-back Tyrell Malacia. They have also signed former Tottenham Hotspur and Brentford playmaker Christian Eriksen on a free transfer.The defender is capable of playing in a defensive duo as well as in a back three, although many have questioned the signing. Martinez stands at 5' 8" tall, which will make him one of the shortest centre-backs in an incredibly physical Premier League.Rival supporters took to Twitter to mock United for the signing, with many believing that the South American will flop in England:𝑲𝒐𝒖𝒍𝒊𝒃𝑨𝒍𝒍𝒚 🦋@CFCAllyRhodes@FabrizioRomano @ManUtd @Transfers Won’t make United finish top 441@FabrizioRomano @ManUtd @Transfers Won’t make United finish top 4Sean Casey@caseysean51@TheSecretScout_ @FabrizioRomano @ManUtd @Transfers Ajax replaced him with a better player for a 3rd of the price10@TheSecretScout_ @FabrizioRomano @ManUtd @Transfers Ajax replaced him with a better player for a 3rd of the price𝕱𝕮𝕭 𝖑𝖎𝖋𝖊𝖘𝖙𝖞𝖑𝖊@fcb_lifestyle@FabrizioRomano @ManUtd @Transfers 67 MILL 1621@FabrizioRomano @ManUtd @Transfers 67 MILL 😭😭😭Dipo@swag_lukarz@FabrizioRomano @ManUtd @Transfers 67M is a bit high. Man United and overpaying 5&6 €88M Fridge with €67M Dwarf I just can’t wait 2@FabrizioRomano @ManUtd @Transfers 67M is a bit high. Man United and overpaying 5&6 €88M Fridge with €67M Dwarf 😂😅 I just can’t wait 😅Yu wansom@Gunner9820@UtdDozie @FabrizioRomano @ManUtd @Transfers They ripped you off for the Argentinian Hasbulla90@UtdDozie @FabrizioRomano @ManUtd @Transfers They ripped you off for the Argentinian HasbullaHyBrid_DaVe@DeHybrid_Dave@FabrizioRomano @ManUtd @Transfers this dude and malaycia got small bodies, they will be overpowered7@FabrizioRomano @ManUtd @Transfers this dude and malaycia got small bodies, they will be overpowered⚡️@clinicalkai@FabrizioRomano @ManUtd @Transfers Can see him flopping tbh, poor business from united96@FabrizioRomano @ManUtd @Transfers Can see him flopping tbh, poor business from unitedMelod¥@TuneyLFC@FabrizioRomano @ManUtd @Transfers Joining a finished club,sorry to this man3@FabrizioRomano @ManUtd @Transfers Joining a finished club,sorry to this manAraujo owns RM@Peak_Cule@FabrizioRomano @ManUtd @Transfers 64 mil for a 5’9 CB 8@FabrizioRomano @ManUtd @Transfers 64 mil for a 5’9 CB 😭😭SC@seanxcumminsBrilliant player but it’s crazy how inflated the market is… we got 20 year old Konaté for £36m twitter.com/fabrizioromano…Fabrizio Romano@FabrizioRomanoOfficial and now confirmed! Lisandro Martínez joins Manchester United on permanent deal from Ajax, contract until June 2027 with an option for further season. 🤝 #MUFCOfficial fee is £55m (€57m including solidarity payments) plus €10m add-ons.31Official and now confirmed! Lisandro Martínez joins Manchester United on permanent deal from Ajax, contract until June 2027 with an option for further season. 🔴🇦🇷🤝 #MUFCOfficial fee is £55m (€57m including solidarity payments) plus €10m add-ons. https://t.co/0D9lb41KWaBrilliant player but it’s crazy how inflated the market is… we got 20 year old Konaté for £36m twitter.com/fabrizioromano…Rio Ferdinand predicts where Lisandro Martinez will play for Manchester UnitedAlthough predominantly a centre-half, Martinez's versatility means he is capable of playing at left-back, as well as in defensive midfield.United legend Ferdinand believes the South American's ability to play in numerous positions will be a big boost for his former side. He told the VIBE with Five podcast, as quoted by the Manchester Evening News:“I think they’ll be a mix (where Martinez will play). He’s very comfortable playing both positions. I think he could play in there [midfield] quite easily. I think they’ll pick and choose the games, and mix it up for when it suits them.“If it suits them to play him in midfield and have the extra body and resilience in there, in front of the back four and that extra protection from someone who knows how to defend, then I think it may be utilised."He added:“But if we’ve got a lot of the ball and we’re expected to dominate possession against the so-called lesser teams then he may not be called upon in that position [midfield] and he may slot back into centre-back position or maybe not start at all. He gives us more options and that’s what we need in there.”OptaJoe@OptaJoe1 - Lisandro Martínez completed more passes per 90 than any player to play 10+ times in last season's Eredivisie (82.3), while he also boasted the best aerial duel success rate of any player to contest 100+ aerials in the 2021-22 competition (70.2%). All-rounder.11822571 - Lisandro Martínez completed more passes per 90 than any player to play 10+ times in last season's Eredivisie (82.3), while he also boasted the best aerial duel success rate of any player to contest 100+ aerials in the 2021-22 competition (70.2%). All-rounder. https://t.co/s0050fjdu6