Eder currently plays his football with Sporting Braga, who value the player in the region of £16million, and although that would not bother Arsenal too much, Newcastle would have to try and bring that fee down to have any chance of doing a deal.
The 25-year-old is also a target for West Ham and Tottenham, who have had scouts watch the 6ft 2in star, but Arsene Wenger would be confident of fighting off their interest.
The offer of Champions League football would probably win the day for Wenger, who is keen to sign at least one striker ahead of next season.
Roberto Firmino says he is unconcerned as to who Liverpool will be drawn to face in the Champions League quarter-finals.
Juventus manager Massimiliano Allegri is delighted to be in the Champions League quarter-finals and believes they can compete with the best.