Sevilla defender Jules Kounde has reportedly agreed to sign for Barcelona this summer, snubbing Chelsea in the process. After the news broke, rival fans poked fun at the Blues for missing out on yet another transfer target.The 23-year-old French centre-back was the subject of interest from both clubs, however, he will be moving to Camp Nou this summer.Transfer expert Fabrizio Romano has reported that the Blaugrana have secured a verbal agreement with Sevilla to sign the France international.He agreed personal terms with the La Liga giants last weekend and will soon put pen to paper to complete the move.Fabrizio Romano@FabrizioRomanoJules Koundé to Barcelona, here we go! Verbal agreement now in place with Sevilla after the long saga and further negotiations today, waiting to get it signed soon. #FCBJules Koundé agreed personal terms with Barça last weekend, contract ready. Xavi, key factor again.16223125858Jules Koundé to Barcelona, here we go! Verbal agreement now in place with Sevilla after the long saga and further negotiations today, waiting to get it signed soon. 🚨🔵🔴 #FCBJules Koundé agreed personal terms with Barça last weekend, contract ready. Xavi, key factor again. https://t.co/eX2jeVPheFRival fans have taken to social media to lampoon Chelsea for losing out to Barcelona yet again. The Blues had also been linked with former Leeds United winger Raphinha and former Bayern Munich forward Robert Lewandowski, both of whom ended up joining the Catalan side instead.Ousmane Dembele was also on their radar as he faced an uncertain future at Camp Nou, but he, too, extended his contract with the club.All this comes on the back of Barca signing Andreas Christensen free of cost. The Catalan giants could also potentially price away Cesar Azpilicueta and Marcos Alonso, both of whom have been linked with them for some time now.Fans mocked Chelsea manager Thomas Tuchel for his apparent poor pulling power; one even said that Kounde was the 28th player to reject the Blues this summer.Here are some of the best Twitter reactions:Trey@UTDTrey@FabrizioRomano Let's laugh at Chelsea fans10823284@FabrizioRomano Let's laugh at Chelsea fansRated@FCBLev@FabrizioRomano8783775@FabrizioRomano https://t.co/PUfT4MOFAqً@TheFergusonWay@FabrizioRomano243487@FabrizioRomano https://t.co/uFavqRlEONMoë 🏴󠁧󠁢󠁥󠁮󠁧󠁿 are winning de WC@Moe_y11@FabrizioRomano They went 0/5 twitter.com/chels_hq/statu…⭐️ Chels HQ ⭐️@Chels_HQ- Barcelona want Kounde - we’re already negotiating.- Barcelona want Lewandowski - we’re interested.- Barcelona want Raphinha - we’re set to call him.- Barcelona want Azpilicueta and Alonso, we’re playing hardball.- Barcelona want to keep Dembele, we can get him.Fun. 🤭473- Barcelona want Kounde - we’re already negotiating.- Barcelona want Lewandowski - we’re interested.- Barcelona want Raphinha - we’re set to call him.- Barcelona want Azpilicueta and Alonso, we’re playing hardball.- Barcelona want to keep Dembele, we can get him.Fun. 🤭@FabrizioRomano They went 0/5 😭😭😭😭😭 twitter.com/chels_hq/statu…#ThatPSGGuy@erosbietweets@FabrizioRomano Tuchel has no pull to attract players at all 🤦‍♂️@FabrizioRomano Tuchel has no pull to attract players at all 🤦‍♂️UpYourArsenal🔴⚪🔴⚪♥️@UPYOURARSENAL04@FabrizioRomano Thomas Tuchel pull27316@FabrizioRomano Thomas Tuchel pull https://t.co/exYboiPKJG☝️🤚@HMZOR_That’s the 28th player to reject Chelsea this window twitter.com/fabrizioromano…Fabrizio Romano@FabrizioRomanoJules Koundé to Barcelona, here we go! Verbal agreement now in place with Sevilla after the long saga and further negotiations today, waiting to get it signed soon. #FCBJules Koundé agreed personal terms with Barça last weekend, contract ready. Xavi, key factor again.16208925833Jules Koundé to Barcelona, here we go! Verbal agreement now in place with Sevilla after the long saga and further negotiations today, waiting to get it signed soon. 🚨🔵🔴 #FCBJules Koundé agreed personal terms with Barça last weekend, contract ready. Xavi, key factor again. https://t.co/eX2jeVPheFThat’s the 28th player to reject Chelsea this window twitter.com/fabrizioromano… https://t.co/iDmMiHOzyJKounde's Barcelona transfer compounds Chelsea's miseryIt hasn't been a good summer for 'The Pensioners,' who've struggled both on-and-off the field.Chelsea FC; Image Credits: Sports IllustratedOut of their three pre-season games, they've won just one and registered a 4-0 humiliation at the hands of arch-rivals Arsenal.In terms of transfer activities, Chelsea have signed Raheem Sterling and Kalidou Koulibaly, both of whom are great signings, but the club wants more new talent.Kounde's snub might have hurt them the most as the west London side are light on defense after they lost two centre-backs in Christensen and Rudiger. It's clear that 'The Blues' are looking to reinforce their defensive line.It will be interesting to see how the west London side fill the gaps in defense after losing out on Jules Kounde.