Joel Campbell appears to have played his last game for Arsenal, with the club set to allow him to leave this summer.

The 23-year-old striker has spent the second half of the season on loan at Spanish side Villarreal but has failed to find the net in 19 appearances to date.

Standard Sport understands Campbell will be made surplus to requirements by Arsenal manager Arsene Wenger upon his return to north London and the Costa Rica international is keen to resurrect his career with a permanent move away.

Campbell is believed to feel frustrated by Wenger’s insistence last summer that he would be given a genuine first-team chance after turning down the opportunity to make a loan move to Greek club Olympiakos permanent.

However, he started just three games in the first half of the campaign — none of which came in the Premier League — and Campbell is believed to be looking ahead to the next chapter of his development.

Olympiakos remain interested in completing a deal for Campbell after he scored nine goals in a season-long loan last year, while reports in Portugal this morning suggest Campbell has emerged as a target for Sporting Lisbon.

How Arsenal’s signings have fared this season 6 show all How Arsenal’s signings have fared this season 1/6 Gabriel Paulista Mark: C



Difficult to judge him on just four starts since arriving from Villarreal in January.



Has the qualities of an old-fashioned English centre-back in that he relishes a tackle and combative in the air.



Per Mertesacker and Laurent Koscielny have remained first-choice when fit but Gabriel may be capable of providing long-term competition given that at aged 24, he has potential to improve.



The Brazilian arrived in north London unable to speak a word of English and Wenger has hinted that with better communication skills may come more game-time. Getty 2/6 Danny Welbeck Mark: B-



Became an important figure upon arrival with Olivier Giroud sidelined for three months but has not had the impact in front of goal he would have liked.



Eight goals from 34 appearances is a below-par return for a top-four striker and he has been reduced to a more peripheral player since Giroud’s comeback, even though Wenger is a fan of his versatility and attitude.



Welbeck cost a relatively modest £16million and room for improvement aged just 24 but he will need to be more clinical in front of goal next year. GETTY 3/6 Calum Chambers Mark: B



Enjoyed a meteoric rise in the first month of the season, making his Premier League and Champions League debuts for Arsenal before earning his first senior England cap against Norway in early September.



Showed good versatility in playing at right-back and centre-back while Wenger has earmarked him for a future role in defensive midfield.



His involvement has been more sporadic in the second half of the season with Hector Bellerin excelling but on balance it has been an encouraging first season for the 20-year-old. GETTY 4/6 David Ospina Mark: B



Injury hampered him at the start of Arsenal career but Ospina took full advantage of Wojciech Szczesny’s shaky form to establish himself as manager Arsene Wenger’s first-choice goalkeeper.



He is a more composed and calm presence between the posts than Szczesny but whether Ospina has done enough to convince Wenger he is the long-term solution remains to be seen.



The fact Arsenal are keen on signing Petr Cech from Chelsea would suggest not, but Ospina has exceeded expectations this year regardless. 5/6 Mathieu Debuchy Mark: C



The jury is still out after a season curtailed by injury.



Debuchy has been restricted to just 10 Premier League starts after undergoing surgery twice during the course of the campaign - the first on his left ankle in September and the second on his right shoulder in January.



Had looked a reasonable replacement for Bacary Sagna prior to that first injury but it has since become clear that the emergence of Hector Bellerin alongside Calum Chambers leaves Debuchy with serious competition for the right-back spot next season. Getty 6/6 Alexis Sanchez Mark: A



The Chilean has been nothing short of a revelation in his first season at Arsenal.



Nobody at the club has started more matches (44) but there has been no diminishment in his intensity or influence.



Sanchez’s work rate has had a positive impact on his new team-mates while his 22 goals have ensured Arsenal are all but certain to finish in the top four.



Rightly shortlisted for PFA Player of the Year. Getty 1/6 Gabriel Paulista Mark: C



Difficult to judge him on just four starts since arriving from Villarreal in January.



Has the qualities of an old-fashioned English centre-back in that he relishes a tackle and combative in the air.



Per Mertesacker and Laurent Koscielny have remained first-choice when fit but Gabriel may be capable of providing long-term competition given that at aged 24, he has potential to improve.



The Brazilian arrived in north London unable to speak a word of English and Wenger has hinted that with better communication skills may come more game-time. Getty 2/6 Danny Welbeck Mark: B-



Became an important figure upon arrival with Olivier Giroud sidelined for three months but has not had the impact in front of goal he would have liked.



Eight goals from 34 appearances is a below-par return for a top-four striker and he has been reduced to a more peripheral player since Giroud’s comeback, even though Wenger is a fan of his versatility and attitude.



Welbeck cost a relatively modest £16million and room for improvement aged just 24 but he will need to be more clinical in front of goal next year. GETTY 3/6 Calum Chambers Mark: B



Enjoyed a meteoric rise in the first month of the season, making his Premier League and Champions League debuts for Arsenal before earning his first senior England cap against Norway in early September.



Showed good versatility in playing at right-back and centre-back while Wenger has earmarked him for a future role in defensive midfield.



His involvement has been more sporadic in the second half of the season with Hector Bellerin excelling but on balance it has been an encouraging first season for the 20-year-old. GETTY 4/6 David Ospina Mark: B



Injury hampered him at the start of Arsenal career but Ospina took full advantage of Wojciech Szczesny’s shaky form to establish himself as manager Arsene Wenger’s first-choice goalkeeper.



He is a more composed and calm presence between the posts than Szczesny but whether Ospina has done enough to convince Wenger he is the long-term solution remains to be seen.



The fact Arsenal are keen on signing Petr Cech from Chelsea would suggest not, but Ospina has exceeded expectations this year regardless. 5/6 Mathieu Debuchy Mark: C



The jury is still out after a season curtailed by injury.



Debuchy has been restricted to just 10 Premier League starts after undergoing surgery twice during the course of the campaign - the first on his left ankle in September and the second on his right shoulder in January.



Had looked a reasonable replacement for Bacary Sagna prior to that first injury but it has since become clear that the emergence of Hector Bellerin alongside Calum Chambers leaves Debuchy with serious competition for the right-back spot next season. Getty 6/6 Alexis Sanchez Mark: A



The Chilean has been nothing short of a revelation in his first season at Arsenal.



Nobody at the club has started more matches (44) but there has been no diminishment in his intensity or influence.



Sanchez’s work rate has had a positive impact on his new team-mates while his 22 goals have ensured Arsenal are all but certain to finish in the top four.



Rightly shortlisted for PFA Player of the Year. Getty

That raises the possibility of Campbell being used as a makeweight in Arsenal’s potential move for midfielder William Carvalho.

Although Wenger has been highly impressed by the emergence of Francis Coquelin since the youngster broke into the team around the turn of the year, Arsenal are still monitoring a number of defensive midfielders with a view to strengthening that position at the end of the season.

Arsenal have been admirers of Carvalho for some time and expressed an interest in signing the 23-year-old last summer but were put off by the inflated £35 million transfer fee and complications surrounding third-party ownership.

However, as Standard Sport revealed last month, those third party issues have been removed and Carvalho is now available for a fee in the region of £21.5 million.

Morgan Schneiderlin remains a possible target, although Southampton’s insistence on meeting their £25m valuation is so far proving prohibitive. The Frenchman has strongly hinted his intention to force through a move away from Southampton now the club are certain not to qualify for next season’s Champions League.