Arsenal’s signings over the past 18 months have been spot on. The Gunners have rarely missed a beat in the transfer market. Declan Rice, Kai Havertz and David Raya have all become key players after signing this summer, while Jakub Kiwior and Leandro Trossard have been brilliant since arriving last January. However, there is always going to be the odd signing that proves to be a bit underwhelming, and according to Eamon Dunphy, speaking on his podcast, there’s one Arsenal player who fits into that category. Arsenal made a disappointing signing last summerAccording to Dunphy, Gabriel Jesus has b…