The 24-year-old American, who holds an Italian passport, has reportedly been given a chance to earn a permanent move to the Madjeski Stadium.
Ronny Deila spoke after Celtic's 4-1 win over Ross County.
Paul Merson was impressed with performances from Jesse Lingard and Chris Smalling.
Ian Harte says he would have been proud of Alex Mowatt's goal against Huddersfield.
Arsenal drew 1-1 at home to Tottenham Hotspur.
Newcastle United defeated Bournemouth 1-0 at the Vitality Stadium in the Premier League on Saturday.
Gary Gardner, Ian Taylor and Callum Robinson also took to social media after a 0-0 draw with Manchester City.
The Celtic midfielder is looking like a great player this season.
Liverpool couldn't beat Crystal Palace but still scored a brilliant team goal on Sunday afternoon - finished off by the Brazilian.
The West Ham playmaker came off injured against Everton on Saturday.