As the close season dawns, we review the latest Sunderland transfer rumours. Who should Big Sam be targeting?
Sunderland and Middlesbrough are reported to have the Scottish midfielder in their sights. Morrison has Premier League experience, having spent the last nine years at West Brom, but has been sidelined since mid-January with a hamstring problem. The player will be available on a free transfer, having turned down contract offers from West Brom.
He's a defensively-minded player, skilled at controlling the midfield and reading the game. He also contributes in attack, with three goals and three assists in his 18 games for Albion before his season was prematurely cut short. He has been a consistently good performer since promotion to the Premier League in 2010, leading Allardyce to speak highly of the 29-year-old on previous occasions.
Verdict: Sign him. Available on a free, he would bring instant benefits to the side. He is a similar player to Lee Cattermole, but with more versatility and attacking potential. He would do very well partnered with Jan Kirchhoff as part of an imposing, dynamic central midfield duo.
Stade Rennais' attack is the fifth-most potent in Ligue 1, and Grosicki has been a key part of it. Brought into the fold by new Rennais manager Rolland Courbis, the Pole has a reputation for making an impact as a super sub. He is a fast, pacy winger, able to play on either flank and not afraid to run at opponents. He has 8 goals in his 37 appearances for Poland, and his club manager has tipped him to be one of the stars at the upcoming Euro 2016.
Grosicki is a skilled, well-rounded attacking player, winning plaudits in France for his contributions. He can make key passes and assists just as well as scoring goals himself. However, he struggles in both French and English and shies away from the media, which may indicate problems adjusting to new surroundings. Allardyce likes to build rapport with his players and will surely be alert to the potential issues.
Verdict: Sign him, but don't break the bank. Grosicki would add variety in attack to the squad, but should not be regarded as a key priority. Wahbi Khazri and Fabio Borini already do an effective job on either wing, but Grosicki would fit in well as an impact sub.
The Spurs attacker is reportedly considering his options in the close season following disagreement on a number of principles between him and his club, and Sunderland have been linked with a move for the South Korean international. He is a threat when counter-attacking and likes to try to beat defenders with the ball. He has, at various times this season, played across the midfield and as a centre-forward, all to mixed reviews, but has contributed 7 goals in 35 appearances.
Wherever Son ends up next season, he is likely to miss the start of it, having expressed a wish to play for South Korea at the 2016 Olympics in Rio de Janeiro in August. This may give Allardyce pause for thought about signing him, because such a move would surely have an impact on pre-season preparations.
Verdict: Don't bother. Olympics or not, Son doesn't offer anything that we don't already have in Fabio Borini. Having paid £22 million for him just a year ago, Spurs are likely to demand a disproportionate fee for the player.