Gray for Lukaku. Outright downgrade. Gray isn't anywhere near Lukaku. Gray won't be getting them 20+goals season
Gray is decent, perhaps he can improve further but it's rather underwhelming in my opinion. He's decent, as is Klaasen, as is Pickford, as is Keane. But are they better than decent? Not really. Sigurdsson fits into that category too, a big fish in a small pond at Swansea.
They are very unexciting signings. Those signings do nothing to improve them further, especially when you factor in that Lukaku is off.
Oh, and just to make another point, it will be interesting how they brush up Andre Gray's comments from a few years back. They'll be quiet on that, however if it was us signing him they'd want Gray locked up for life and we'd be homophobe-sympathizers.