We’ve pulled together the definitive list of players who have been linked with joining the Blues so far.
1. Ethan Robson
A name that surfaced but eventually moved to Blackpool - with people high up at Pompey later admitting they've never heard of him! Photo: Jack Thomas
2. Richie Smallwood
Another midfield name to pop up but never a serious contender to move to Fratton before joining Hull. Photo: Mark Runnacles
3. Alex Cochrane
Promising Brighton youngster has been watched - but Seagulls wary of him being behind Lee Brown in pecking order Photo: Alex Burstow
4. Leif Davis
Attacking Leeds left-back fits the bill for kind of promising left-sided player wanted Photo: Bruce Rollinson