Gray has also suggested that Queens Park Rangers striker Charlie Austin would be a good buy for Newcastle in the January transfer window.
The former England international, though, does not appear to back the Magpies’ reported interest in West Bromwich Albion striker Saido Berahino.
@mickygray33 Who'd u get Austin or Berahino! Shelvey good for the Toon!— Dezy Ward (@DezyByers33) January 12, 2016
Austin has been on the books of QPR since 2013 and has a contract that runs until the end of the season. The 26-year-old is one of the best player in the Championship and is a proven Premier League striker.
The Englishman scored 18 goals and created 23 chances in 35 Premier League games for QPR last season. Austin has struggled with injuries this campaign, but he has still scored 10 goals and created 17 chances in 16 Championship matches.
According to a report in The Northern Echo, Newcastle are interested in signing the QPR striker in the January transfer window.
Berahino has been on the books of West Brom his entire professional career so far and has a contract until June 2017.
The 22-year-old is one of the more promising young strikers in the Championship, but he is struggling for form at the moment.
The former England Under-21 international has scored just three goals and created only four chances in 15 Premier League games so far this campaign. The Daily Mail recently reported of Newcastle's interest in Berahino.
According to BBC Sport, Newcastle have agreed a £12 million fee with Swansea for the transfer of Shelvey. The England international midfielder joined the Swans from Premier League rivals Liverpool in the summer of 2013.
Shelvey soon established himself as a key player for the Swans, making 32 appearances in the Premier League during the 2013-14 campaign. The 23-year-old scored six goals, created 45 chances, and has a pass accuracy of 83% and a shot accuracy of 42%.
The former Charlton Athletic man scored three goals and created 30 chances in 31 Premier League games for the Swans last season. Shelvey is struggling at the moment, having scored one goal and created 23 chances in 16 league matches for Swansea so far this term.