Liam Cullen seems a fine prospect to me but is probably not ready yet. That said, many players have been thrown in the football deep end and went on to prosper. He's an entirely different sort of striker to Surridge being smaller but nippier. However, at his level he knows where the goal is and definitely is something of a poacher. I certainly think he should be given his chance in the not too distant future without piling too much expectation on his shoulders until he's had a chance to get used to the higher level. Some general info:
Cullen was born in Tenby and is 20 years of age. Been with the Swans since he was 8 and played for the Under 18 side at the age of 13. He has one first team appearance as a sub against Palace in the EFL Cup. Has appeared for Wales 'Unders' teams at 17, 19, 20 and 21 levels scoring 6 times in a total of 25 appearances. Perhaps not a lot but then Wales 'Unders' aren't the strongest of teams at any level.