Arter is said to have resolved his differences with assistant manager Roy Keane.
And his Ireland boss Martin O’Neill believes he has something to prove to the Premier League club who let him go out on loan. Arter is now at Cardiff for the season.
Speaking about Arter, O’Neill said: “The two of them have been talking. I probably believe it should make Harry stronger from it all.
“I think if there is criticism is coming your way, take it in some sort of spirit and tend to prove someone wrong if the criticism is levelled at you. If someone is praising you, try to prove them right.
“In this case, Harry wants to do that. I think he wants to do that, not just for Ireland, but I think he wants to prove Bournemouth were wrong to let him leave there at this minute, or certainly let him go out on loan.
“He has a bit to prove which is great. I think players should always have something to prove as should we as managers as well.”