Barcelona's nightmare £300m year as just one of seven 2017-18 signings remains

Aston Villa's permanent deal for Philippe Coutinho is significant for Steven Gerrard's side, but it also represents another landmark for Barcelona's regrettable recent transfer windows.

The Brazil international has put pen to paper on a four-year deal with the Premier League club, after they agreed a £17m fee with Barca. That's a loss of more than £100m for the La Liga club, who paid a nine-figure sum to bring him to Camp Nou from Liverpool in January 2018.

Coutinho isn't the only signing from the 2017-18 campaign who didn't have the desired impact, though. Ernesto Valverde's side brought in seven players on permanent deals, but Coutinho's permanent exit means just one remains - and he too could be gone before long. Here, Mirror Football takes a look at all seven

Brazilian wonderkid Marlon joined Barcelona from Fluminense, having spent the previous season on loan at Camp Nou. The young defender had an inauspicious start, forgetting his passport for a Champions League trip, but impressed enough on loan to step up from the B team to the seniors.

Upon joining permanently, he was sent out on loan to Nice, but the switch ended prematurely and he moved to Sassuolo in the summer of 2018. He did not play a competitive game for Barca in the interim.

The Catalan club had a buy-back option on the centre-back, who turned 27 in February. However, they did not exercise the option and he moved to Shakhtar Donetsk at the end of the 2021 season.

One player who Barcelona did use a buy-back option on was Deulofeu. A product of La Masia, the creative forward returned to Camp Nou after impressing in England for Everton.

The Spain international was given a few opportunities by Valverde, scoring twice in his second spell. However,