This card can indicate that Bob is considering the possibility of changing cities because he feels it would be the right choice and best suited to his needs. This change could be a step towards something better, towards the goal he has in mind. It could also mean that Robert is seeking a sense of fulfillment and happiness for his current or future life.
The Tower suggests that Roberto should be ready to make tough decisions and let go of the things that aren't helping him move forward. This card can also indicate that Robert needs to consider accepting his current circumstances and take his own life into his own hands. It could mean that Roberto has to stop for a moment and reflect on the situation he's in and decide if he's really willing to make such a big change.
The two cards seem to suggest that while Robert may feel that a change could be a step in the right direction, he should also be ready to accept the current situation and make his own decisions after careful consideration. Therefore, it is probable that Roberto decides to change the city only if he is aware of the possible consequences of his choice and willing to accept them.