Neil McCann outlines who to watch in the Scottish Premiership

Sky Sports' Neil McCann looks ahead to this weekend's Scottish Premiership fixtures, and offers his opinion on who the key players are in each of the six games.

Aberdeen v St Johnstone - Saturday

Michael O'Halloran (St Johnstone) 

With the creativity, pace and strength O'Halloran possesses in his game, he has the qualities available to give the Saints a chance of winning any football match.

His willingness to get into the box when not in possession of the ball adds another dimension to his game, making him a key part in the attacking side of St Johnstone's make-up.

Dundee v Motherwell - Saturday

Greg Stewart (Dundee) 

Stewart has become something of a talisman for Dundee. Paul Hartley has, at times, used him slightly wider on the right when going with a front two of Kane Hemmings and Rory Loy, but Stewart still remains Dundee's biggest threat.

Despite not possessing lightening pace, he has the ability to open up any team and provides a constant threat when cutting in on his wonderfully gifted left foot.

Hearts v Kilmarnock - Saturday

Sam Nicholson (Hearts) 

Nicholson is one of my favourite young players in the game at the moment. Despite not enjoying a clean run in the team as Robbie Neilson has rotated his squad, when selected I think he offers a real attacking threat.

When operating in the wide areas, he is more than capable of going past his opponents and supplying ammunition for the strikers but an aspect of his game that is pleasing to me, is that he is getting into goalscoring positions. Even when he is having a quiet game, Sam can suddenly burst into life and provide a game changing moment. He's a match winner. 

Partick Thistle v Dundee Utd - Saturday

Billy McKay (Dundee Utd) 

Jackie McNamara brought Billy to United to try and score the goals which were so badly missing from his side. McKay is a proven goalscorer in this league and is now finding the net and looking every inch the marksman Jackie was looking for.

Unfortunately the goals came too late to stop Jackie from losing his job. Billy's job though is to continue to find the net and ignite Dundee United's season. Give him service, and I've no doubt he will. 

Ross County v Inverness - Saturday

Liam Boyce (Ross County) 

Boyce is a big, powerful and robust striker who is bang on form and must be the one to watch! He's on a tremendous streak, scoring goals that have seen his club enjoy a very solid start to the season.

Not only will he be a big player in the Highland derby for County this weekend but must surely be in Northern Ireland manager Michael O'Neill's mind! Northern Ireland are on the brink of a monumental achievement in qualifying for the European Championships in France and with the prolific goalscorer Kyle Lafferty suspended, Boyce must come into the reckoning to grab them the goals that would get them there.

Hamilton v Celtic - Sunday (12.30pm)

Ali Crawford (Hamilton) 

Crawford is a little gem. Although not possessing a big physical presence, he is an elusive and intelligent footballer that can more than handle life in the midfield areas.

He sometimes operates in an advanced position just off the striker or in wider areas but wherever Crawford plays, he is Hamilton's most creative player. In possession of the ball, Ali has the ability to make things happen in the final third and as he's already shown against Celtic, he can score his fair share too.