Caracciolo as the club's top scorer for the domestic season. Diamanti's sixth goal came in a 2–1 loss against Catania which confirmed Brescia's relegation to Serie B, just one season after promotion to the top-flight. In July 2011, West Ham called for Diamanti's registration at Brescia to be suspended by the Italian Football Federation (FIGC) claiming the latest instalment of his €2.2 million transfer fee from Brescia had not yet been paid. Bologna On 1 August 2011, Diamanti was signed by Serie A side Bologna in a co-ownership deal with Brescia, for €1.5 million. (Italian) Diamanti's first goal for the club came in a 3–1 home defeat to Internazionale on 24 September. On 11 December, Bologna played host to Inter's cross–city rivals Milan; Diamanti played inspired football and provided an assist for Marco Di Vaio's opening goal and then netted a 73rd-minute goal to earn his side a 2–2 draw. Diamanti scored the winning goal of a 3–1 away victory over Lazio on 11 March 2012 with a 30-yard strike over out-of-position goalkeeper Federico Marchetti. On 12 April, Diamanti scored an incredible free-kick against Cagliari to move his side up to 40 points and six points clear of the relegation zone. On 16 September 2012, Diamanti scored in between strikes from Alberto Gilardino to help Bologna to a 3–2 comeback victory over Roma at the Stadio Olimpico. Diamanti put the finishing touches on a comfortable 3–0 defeat of Palermo on 18 November, netting from the penalty spot in the 48th minute. On 2 December, Diamanti netted from a free-kick as Bologna earned a hard-fought 2–1 victory over Atalanta, courtesy of a second-half goal from teammate Manolo Gabbiadini. Two weeks later, on 16 December, Diamanti proved instrumental in Bologna's surprise 3–2 defeat of high-flying Napoli, providing the free-kick from which Daniele Portanova headed in a minute from time to secure the victory. During the 2012–13 Serie A season, Diamanti was the most fouled player in Serie A, having been fouled 147 times. Guangzhou Evergrande On 7 February 2014, Bologna and Guangzhou Evergrande officially announced an agreement over transferring Diamanti to Guangzhou Evergrande with a transfer fee of €6.9 million. He made his debut appearance for Guangzhou in a 4–2 win over Melbourne Victory on 26 February 2014 in the first group match of the 2014 Asian Champions League. He scored twice to change the course of the match after Guangzhou lagged